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Reflecting on the Past Season

By Marilyn Homewood, Master Gardener

The frost has made its first appearance marking the end of the summer growing season.  Before plunging headlong into bulb planting, I find it valuable to use this time to take stock of the past season as it serves to help me plan for next year (although I must admit I have already submitted a lengthy list of dahlia tubers for next spring).  I find it helpful to keep a gardening journal throughout the year for reference purposes and it becomes an important part of this process. There are many entries especially in spring when I am propagating, not so much in the summer but I always do a fall summary.  This written record has served me well over the past few years.  I also take this opportunity to look back over the photos I took throughout the season. They sometime remind me of just how much I enjoyed a certain plant.  One plant whose value seems to fade from my memory is sweet peas. Time consuming to grow, somewhat fleeting in our climate, I am always ready to drop them from next year’s list until I look at the photo.  Then I recall just how much I enjoyed their appearance and scent!!

Successes: It can be hard to see all the good things that happen when you are in the midst of seed starting, weeding, transplanting and harvesting.  I tend to dwell on what is not working (don’t all gardeners?) and often pass over the good stuff.  Evaluating the successes allows you to repeat or expand on your wins for next year.  This year I grew lisianthus (prairie gentian) for the first time.  It grew well in our climate and produces a bloom that is both attractive and long lasting.  It has continued to push out buds and I am still cutting it for the vase.  Next year, I will try starting it from seed, grow more of them and also plant some in the landscape for bloom from August to frost.

Challenges: Identify what did not go well and try to ascertain what the problem was and if it can be addressed.  Sometimes things just don’t work in your situation and its worth evaluating if the time, effort and money is worth allocating to this endeavor.  After a couple years of trying, I have decided to give up on ranunculus.  They are labour intensive as they require pre-sprouting in March with planting out in April under hoops and frost cloth.  Growth was great on the plants however each time a plant budded up an unidentified varmint would come in and make off with the flower bud.  So it’s a choice between adding rabbit protection to the already busy growing regime or devoting the resources elsewhere.

Future Opportunities: Always be on the lookout for possibilities for next season.  Whether it is a major project or a plant acquisition, this is a good time to firm up ideas.  I watch a lot of different types of gardening webinars and do a lot of reading and am always jotting down plant ideas that might work for me.  This is a good time to evaluate that list and based on available space, determine what to try for next year.  If it involves propagation, it might mean acting now.  I have decided to expand my planting of perennial poppies and am going to take root cuttings for the first time which will be overwintered in my extension.  With any luck, I will have new plants for next spring.

Try investing in a few hours musing over you garden and you reap the rewards next year.

https://extension.psu.edu/evaluating-the-garden

https://www.canr.msu.edu/news/garden-health-evaluation-part-1

Insect Galls on Trees

By Laura Gardner, Master Gardener in Training

I was out for a walk earlier this summer and noticed that a number of trees in my neighbourhood have lumps on their leaves, leaf stalks, shoots, or at the ends of their branches. At first glance you might be alarmed and think they are diseased, but many are the homes of tiny insects such as aphids, mites, sawflies, psyllids, and midges. They are often quite numerous and they come in different shapes and sizes. A gall is formed through the expansion of plant cells—similar to a tumour. This may be triggered by organisms such as viruses, bacteria, fungi, nematodes, or insects. Insects induce the galls through actions such as oviposition (inserting the egg into the plant tissue), the release of chemicals by the female and eggs, and through feeding. It is a shelter for the young and protects them from predators. While sometimes causing leaf deformity, in the majority of cases, galls are a cosmetic concern and do not harm the tree.

Here are a few you may encounter that are caused by insects:

These variable shaped galls specific to Populus deltoids (Eastern cottonwood) are the homes of an aphid called Mordwilkoja vagabunda (Poplar Vagabond Aphid). New galls are a light colour but become darker with age. Each gall releases upwards of 2,000-winged offspring in mid-July to early August. Sounds like it could have been the inspiration for a science fiction novel or movie.

Rabdophaga strobiloides (Willow Pinecone Gall Midge) are found at the ends of branches of various Salix spp. (Willow). What is amazing about these structures is that up to 31 different insects use them for their young—residing in the papery-like folds of the gall.[i] The galls are also frequently predated by birds and parasitic wasps.[ii] The biodiversity that Willows support is wide and for this they are known to be keystone species—they are also among the earliest plants to flower in the spring and support emerging pollinators like Queen Bumblebees.

Euura proxima (Willow Redgall Sawfly) frequents certain Salix spp. (Willow). This gall can be identified by its red bean-like appearance on the leaves. Sawfly larvae are often mistaken for Butterfly or Moth caterpillars. They can be distinguished by the number of abdominal prolegs: the former has six or more and the latter five or less.

Pachypsylla celtidismamma (Hackberry Nipple Gall Maker) is a Psyllid (Jumping Plant Lice) that forms round, often clustered galls on the underside of Celtis (Hackberry) trees. Adults spend the winter in cracks of the tree bark itself or even in nearby buildings.

The Eriophyid mite, Vasates quadripedes (Maple Bladder Gall) forms on Acer spp (Maple) such as the upper leaves of this Acer x freemanii ‘Autumn Blaze’ (Freeman Maple ‘Autumn Blaze’). The galls first appear as green, then turn to red, and finally black. The mites overwinter in the creases of the tree’s bark.

So, if your trees have strange growths on them, check out the wonderful web site https://gallformers.org. There you can identify galls by their specific host trees, the form of the galls, and their location on the trees. You can also narrow your search down to those that occur in Ontario. Another good site for identification is https://www.bugguide.net, a comprehensive database of insects for the US and Canada.


[i] Willow Pinecone Gall Midge. Minnesota Seasons. http://www.minnesotaseasons.com/Insects/willow_pinecone_gall_midge.html#:~:text=It%20consists%20of%20numerous%2C%20stunted,shape%20resembles%20a%20pine%20cone

[ii] Van Hezewijk, B.H. and Roland, J. (2003), Gall size determines the structure of the Rabdophaga strobiloides host–parasitoid community. Ecological Entomology, 28: 593-603. https://doi.org/10.1046/j.1365-2311.2003.00553.x

Jumping Worms & Invasive Species Awareness

By Christine Freeburn, Master Gardener

Master Gardeners have been talking about the importance of controlling invasive species for years. Purple Loosestrife, Giant Hogweed, Buckthorn, Garlic Mustard and Dog-strangling Vine are on a long list of Invasive Plant Species.

You can check the list out at www.invasivespeciescentre.ca  or www.invadingspecies.com

But there are more than just invasive plants. There are also invasive insects like Spongy Moths and Emerald Ash Borer. There are invasive fish and invertebrates like Zebra Mussels and Asian Carp. We have invasive pathogens like Dutch Elm disease (Dutch Ed: “Identified by the Dutch, not CAUSED by the Dutch”). And just recently, we have begun to hear about Wild Pigs and Jumping Worms.

I took part in a webinar presented by the Royal Botanical Gardens on Jumping Worms (JWs) earlier this month. Two speakers, Brook Schryer from the OFAH who works with the Invading Species Awareness Program and Dr. Michael McTavish with the Smith Forest Health, University of Toronto, spoke about the need to be aware of jumping worm sightings in Ontario. They gave information about Eddmaps.org where interested citizens can share their own findings. You can find a recording of this event at https://www.youtube.com/user/royalbotanicalgarden

Now is a good time to find JWs as they are adults at this time of year and can be better identified.

Jumping Worms are an invasive species of Asian worm that are slowly moving their way from the United States. They are voracious eaters and can consume much of the compost, topsoil and debris that lays on forest floors. They leave behind worms castings that are loose and crumbly similar in appearance to coffee grounds. They are often found in wet and shady spots and castings are spread evenly rather than in clumping piles. The castings can be a thin layer or can be 10 cm deep. It will appear as though the ground has been previously dug as the soil will be loose. Jumping worms are distinguished by their thrashing behaviour when moved or picked up. They have also been known to amputate their tails as a method of evasion from predators. There are usually many worms found together close to the soil surface. The worm body is smoother than our earthworm and tends to be more gray than red. The milking band or clitellum goes all the way around their body. Although the worm dies in the cold winter months, their cocoons survive, becoming juvenile worms in May and June and adults in July.

Left on their own, these worms can spread up to 10 meters per year. However, without human help, the spread could happen much quicker.

Research in Canada is happening, but we should all be aware of the dangers of this invasive species, and take precautions.  We just need to think of the days before Phragmites showed up in every wetland and ditch in our area. Awareness and education are important.

Check out the EDDmaps.org site where you can see where actually sightings of invasives have been recorded. The two presenters encouraged us to go out and search for signs of the Jumping Worm and report it to the EDDmaps, whether a positive sighting or a negative one. You can also call the Invading Species Hotline at 1-800-563-7711 if you have a concern.

My Newest Favourite Flower

By Marilyn Homewood, Master Gardener

One of the new plants that I tried this year was Lisianthus (Eustoma grandiflorum) also known as prairie gentian.  Lisianthus are flowering plants native to northern Mexico and the Great Plains in the United States and as with most prairie plants, they love the heat and are quite drought tolerant.  I thought they just might work in my growing conditions.  The plants are hardy in USDA zones 8 to 10 and are grown as annuals here in Ontario.  Their flowers come in a wide range of colours, are double or single, can be very ruffled and are reminiscent of a rose.  They produce multiple buds on a single stem and one stem can bloom over a 3 week period.  A single stem will last around 2 weeks or more in a vase.  Plants bloom around late July/August and if pruned back when finished, a second smaller flush should bloom in September.  What a treat in August when almost everything else is flagging in the summer heat to have this beauty bloom! A welcome sight in that period before the dahlias really get going.

Is there a down side?  Lisianthus has a bit of a reputation of being difficult to grow. They are very slow to germinate and grow.  Here in Ontario, seeds should be started in early January. I can’t speak to that personally as I was able to purchase plugs in April in order to give the plants a try.  I will attempt to start seed this winter.  There are Lisianthus seed starter groups on line where lots of information and assistance.

Note that these blooms had been in this pot for 2 weeks when the photo was taken!

Seed/Variety Selection

Lisianthus produce tiny seeds hence most of the seed that you purchase is coated to make handling easier (NB coated seed does not store well from season to season).  A number of different series are available and varieties of lisianthus are grouped by bloom season (similar idea to the classifications of snapdragons).  Flowering is stimulated by three factors; Temperature (warmer temperatures accelerate flowering),Light intensity (high light intensity accelerates flowering), and Day length (long days accelerate flowering). By using varieties from Group 2 and Group 3 you can have blooms over a longer period of time as they have different bloom periods.

Cultural Requirements

Lisianthus is a heat-loving plant but it doesn’t like direct afternoon sun. Ideally it should have full morning sun and part shade in the afternoon. The lowest temperature lisianthus can survive outdoors is -12°C and many growers feel that the plant benefits from being planted out before the last frost in order to get their roots established. Lisianthus prefers to have an even amount of water on a regular basis. If it doesn’t rain often, the plant will need to be watered for the best performance.  I neglected to do this (got busy with dahlia issues) and the lack of water was reflected in stem length and bud count but the flowers seemed unaffected (I still had 5-6 buds on each stem). The blooms were wonderful. Recently I visited someone who had watered their plants: they were twice as tall and had even more buds than mine.  Lisianthus can be subject to botrytis hence it’s important to water at the base of the plant. Well-draining soil with a neutral to slightly alkaline pH is preferred. These plants are happy with a feed of compost and if you’re feeling keen, the occasion feed of fish fertilizer. 

Next years seed starting should prove interesting.  Of course, if it doesn’t work there are always plugs!

“Before the seed there comes the thought of bloom” E.B. White

Resources

Armitage, A.M. and J.M. Laushman. 2003. Specialty Cut Flowers, 2nd Edition. Timber Press, 586 pp. 

Lisianthus Seed Starters Group, https://www.facebook.com/groups/198146460815037

Think Spring!

By Cheryl Harrison, Master Gardener

At this time of year, it is difficult to get excited about spring when we know what must come first … fall then winter!  However, late summer is exactly the time to think about spring bulbs because they must be planted in the fall in order to bloom the following spring.

As with all plants, you need to take into consideration the amount of light needed, soil and moisture requirements.  Most bulbs require full sun to part shade, well drained loam soil and watering when dry.  Note that bulbs may rot when over-watered. 

Some sources suggest adding bone meal to the planting hole.  Bone meal adds phosphorus to the soil which may encourage bulb growth but may also harm some of the other beneficial soil constituents.  It is prudent to test your soil first. 

Plant bulbs with the pointed end up and to a depth of 2-3 times the diameter of the bulb.  You may sprinkle blood meal over the planting site or cover with chicken wire to discourage squirrels and chipmunks from digging them up.

Plant your spring flowering bulbs any time between September to December … as long as you are still able to work the ground. 

Spring flowering bulbs are lovely in a formal garden as well as in more natural settings. For naturalization of spring bulbs, please see Bulbs for Naturalizing.

Now the really fun part, what to choose!  Check at your local nursery to see what they have in stock and/or what they may be ordering in.  Choose large, undamaged bulbs.  It is also likely that your favourite on-line supplier carries spring flowering bulbs.  I would suggest that you do this well before you plan to plant to ensure that you are able to get what you want.

Tulips – We are all familiar with the large colourful, showy tulips.  Their blooms may be cup shaped, fringed, double or ruffled.  This fall, I plan to plant some, new-to me species tulip bulbs.  While species tulips are smaller than the tulips that we are most accustomed to, they are colourful, very hardy and have a more open flower. 

Hyacinth – You can not beat the magnificent fragrance of hyacinth blooms in the spring.  They come in several colours, single or double and are accompanied by strong, strappy leaves.  Hyacinths also produce nectar so provide food for some of our early foraging pollinators.

Narcissus – The spring flowering bulb, in the genus Narcissus, is more commonly called a daffodil.  Bloom colours range from bright yellow to cream to white and combinations of these colours.  Daffodils are cheerful flowers.  I always smile when I see them especially in a natural setting.

Crocus – Crocus “bulbs” are actually corms.  What is the difference??, check here.  These are probably the first of the fall plantings that you will see in the spring. Crocus blooms are tube shaped and come in various colours.  The plant is low growing and does well when naturalized.

The above are some of the more often seen spring flowering bulbs but there are more.  Please see Landscape Ontario  for additional suggestions.

Outcompeting Invasive Plants, Part II

By Laura Gardner, Master Gardener in Training

This article was published in err a couple of weeks ago, and is being republished today as a corrective measure. Apologies. -Ed.

Back in a June post[i], I referenced the Ontario Native Plant Council’s best management practices for Alliaria petiolata (Garlic Mustard).[ii] In it they referred to certain native plants that can be used to outcompete it. I would like to mention one other that I am fond of having in my garden. Packera aurea (Golden Groundsel) has a diminutive orange inflorescence and is native to the Peterborough area. It can be aggressive as it reproduces through rhizomes and adventitious shoots on the stems. It is better situated in moist soils and so it may be more subdued in a drier location. In her blog, The Humane Gardener[iii], Nancy Lawson discovered that when she inserted clumps of Golden Groundsel into patches of Garlic Mustard, the latter quickly became surrounded. Garlic Mustard is known to be allelopathic and inhibits the growth of some plants. However, Golden Groundsel does not appear to be inhibited by it.

Golden groundsel, Packera aurea

Anemonastrum canadense (Canada Anemone) is a beautiful vigorous native ground cover that performs well in sun to shaded environments; although it can develop brown leaves in more arid conditions. I am using it to limit the advance of Campanula rapunculoides (Creeping Bellflower). The intent is to envelope it so that it is unable to photosynthesize, grow more foliage, and store energy in its roots. One might argue that this is simply a matter of replacing one problem with another. While it is true that Canada Anemone can be overwhelming, it may be limited by deadheading the flowers, removing rhizomes, adding mulches, and by installing edging below the soil surface. As a native plant, it supports pollinators such as miner bees, sweat bees, and hover flies. The Xerces Society notes that it supports “conservation biological control.”[iv] This is a plant that attracts beneficial insects to your garden which in turn will help control other insects that damage your other plants.

So far, the Creeping Bellflower’s development has been slowed but there are still some basal leaves within the patch and at the perimeter. Right now, it is still a team effort: Canada Anemone and me.


[i] Outcompeting Invasive Plants: Part I. https://peterboroughmastergardeners.com/2022/06/13/outcompeting-invasive-plants-part-1/

[ii] Garlic Mustard (Alliaria petiolata): Best Management Practices in Ontario. Ontario Invasive Plant Council.  https://www.ontarioinvasiveplants.ca/wp-content/uploads/2016/07/OIPC_BMP_GarlicMustard.pdf

[iii] How to Fight Plants with Plants. The Human Gardener. Online: https://www.humanegardener.com/how-to-fight-plants-with-plants/

[iv] Habitat Planning for Beneficial Insects: Guidelines for Conservation Biological Control. Xerces Society. http://www.xerces.org/publications/guidelines/hab

Outcompeting Invasive Plants, Part II

By Laura Gardner, Master Gardener in Training

This article was published in err a couple of weeks ago, and is being republished today as a corrective measure. Apologies. -Ed.

Back in a June post[i], I referenced the Ontario Native Plant Council’s best management practices for Alliaria petiolata (Garlic Mustard).[ii] In it they referred to certain native plants that can be used to outcompete it. I would like to mention one other that I am fond of having in my garden. Packera aurea (Golden Groundsel) has a diminutive orange inflorescence and is native to the Peterborough area. It can be aggressive as it reproduces through rhizomes and adventitious shoots on the stems. It is better situated in moist soils and so it may be more subdued in a drier location. In her blog, The Humane Gardener[iii], Nancy Lawson discovered that when she inserted clumps of Golden Groundsel into patches of Garlic Mustard, the latter quickly became surrounded. Garlic Mustard is known to be allelopathic and inhibits the growth of some plants. However, Golden Groundsel does not appear to be inhibited by it.

Golden groundsel, Packera aurea

Anemonastrum canadense (Canada Anemone) is a beautiful vigorous native ground cover that performs well in sun to shaded environments; although it can develop brown leaves in more arid conditions. I am using it to limit the advance of Campanula rapunculoides (Creeping Bellflower). The intent is to envelope it so that it is unable to photosynthesize, grow more foliage, and store energy in its roots. One might argue that this is simply a matter of replacing one problem with another. While it is true that Canada Anemone can be overwhelming, it may be limited by deadheading the flowers, removing rhizomes, adding mulches, and by installing edging below the soil surface. As a native plant, it supports pollinators such as miner bees, sweat bees, and hover flies. The Xerces Society notes that it supports “conservation biological control.”[iv] This is a plant that attracts beneficial insects to your garden which in turn will help control other insects that damage your other plants.

So far, the Creeping Bellflower’s development has been slowed but there are still some basal leaves within the patch and at the perimeter. Right now, it is still a team effort: Canada Anemone and me.


[i] Outcompeting Invasive Plants: Part I. https://peterboroughmastergardeners.com/2022/06/13/outcompeting-invasive-plants-part-1/

[ii] Garlic Mustard (Alliaria petiolata): Best Management Practices in Ontario. Ontario Invasive Plant Council.  https://www.ontarioinvasiveplants.ca/wp-content/uploads/2016/07/OIPC_BMP_GarlicMustard.pdf

[iii] How to Fight Plants with Plants. The Human Gardener. Online: https://www.humanegardener.com/how-to-fight-plants-with-plants/

[iv] Habitat Planning for Beneficial Insects: Guidelines for Conservation Biological Control. Xerces Society. http://www.xerces.org/publications/guidelines/habitat-planning-for-beneficial-insects

Drought Tolerant Plants

By Sharleen Pratt, Master Gardener

We are into the middle of summer, a time to relax and enjoy all the hard work we have put into our gardens.  I struggle with my plants receiving enough moisture during the summer months and each year I think more about drought tolerance and what I could grow that would require less water and care.

There are several drought tolerant perennials and we are lucky that many of them are native.  Once established they will withstand periods of prolonged drought. Choosing native is a good choice as native plants are tolerant with our soils and climate and have evolved with the birds and pollinators who often use them for shelter and food.

Here are a few drought-tolerant plants that grow well in my garden:

Butterfly Weed (Asclepias tuberosa)

It has been growing at the bottom of my garden near the road and in full sun.  It has a beautiful orange flower and is one of the top butterfly-attracting plants around.  The stems grow 2-3 feet with narrow leaves that are dark green.  If given the room, the plants will get bushy.  The large seed pods are also attractive.  It is a wonderful native plant that tolerates a broad range of conditions.  Beware as this plant emerges very late in the spring and does not like to be disturbed, so mark it well in order not to dig around it.

Prairie Smoke (Geum triflorum)

This is a tough plant that grows to about 6-12 inches.  It has a lovely reddish pink to purple bloom with interesting seed heads.  It has flourished in my native garden at the bottom of my property in full sun and exposed to winter salt.  As the flowers fades and the seeds begin to form, the styles elongate (to 2” long) to form upright, feathery gray tails which collectively resemble a plume or feather duster.  They are very unique.  It spreads by rhizomes and can be naturalized to form an interesting groundcover.

Blanket Flower (Gaillardia)

This perennial is not native but has beautiful brightly-coloured daisy flowers, often with a contrasting central eye.  They are all long blooming and if you have the time to remove the faded flowers, they will continue to bloom for several weeks.  Mine is a compact form that looks lovely at the front of the border.  It prefers hot, dry areas and are therefore, very drought tolerant!  They have a life-span of 2 to 4 years, so cut the plants back hard in early September.  This forces new leaf growth from the base and helps to prevent plants from blooming themselves to death.

Russian Sage (Perovskia atriplicifolia)

It forms an upright bush of fine-textured grey-green leaves that are actually fragrant when rubbed.  The plant becomes a haze of lavender-blue flowers by the end of July.  It continues to bloom for weeks.  Russian Sage is an excellent filler plant for a border.  Leave the woody stems over the winter months to encourage new shoots to appear.  In spring, prune the plant back to 6”. It is very attractive to butterflies.

Little Bluestem (Schirachyrium scoparium)

This is a lovely native grass and is often found growing in open woodlands and prairies. It is a warm season grass so doesn’t start its growth until later in the spring.  Its’ early growth has a blue/green colour. The flowers on this grass are very attractive and the seed heads are fine with a fluffy appearance. The mature seeds are greatly favoured by small birds. This plant is clump forming and grows typically between 2 to 4 feet. The plant looks lovely year-round and the deep roots penetrate deep into the soil. In the fall, it turns a golden to reddish brown. There is a large version called Big Bluestem, but I much prefer the Little Bluestem.  These two plants are actually from a different genus so although they have some similarities, they are also quite different.

Here is an excellent article by the Toronto Master Gardeners with an extensive list of drought tolerant perennials for many different types of conditions.

Another Garden Beauty

By Marilyn Homewood, Master Gardener

Summer solstice has just passed and with it the waning of some iconic garden varieties.  Late spring/early summer brings us not only the iris and rose but the peony as well.  Peonies are large, long-lived perennials that may stay in one place without division for up to 100 years. Peonies bloom in a wide range of forms, from simple, elegant singles to massive doubles with more than 300 petals in colours of white, pink, yellow and red tones.  They form a rounded shrub that may be up to 3 feet in height and width with glossy deep green foliage that remains attractive after the bloom is over.

Itoh peony ‘Bartzella’ in landscape

There are three types of peonies: Herbaceous, Tree and Itoh.  Herbaceous peonies bloom in late spring/early summer and have stems that die back to the ground in the fall.  Tree peonies have a permanent woody stem, more like a shrub. Woody stalks remain standing through winter and go on to flower again the next season. The blooms on trees peonies are larger and more fleeting than those on their herbaceous counterparts.  In our area, tree peonies appreciate a sheltered spot to grow as a hard winter may result in a lot of die back. The third type of peonies are the Itoh peonies.  These plants are a result of crossing herbaceous peonies with tree peonies.  The stems of Itoh peonies die back to the ground each fall and yet the bloom is large like that of a tree peony.  These plants do not require any additional support unlike some of the herbaceous peonies.

Tree peony

Peonies perform best when planted in a location with a minimum of 6 hours of sun per day and must have fertile, well drained soil.  Once planted in a suitable location, they are relatively care free, requiring only a good clean up in the fall to cut the stems down and remove all leaves (reducing the potential for fungal growth). In the case of tree peonies, the stems are not cut but all leaves should be removed and discarded in the landfill.

Peonies are sold as bare roots from growers as well as from some of the larger companies. These can be planted in either spring or fall however from experience fall is the preferred time to get them into the ground.  As well, many nurseries sell peonies in containers that can be added to the garden at any time provided they are kept watered.

Early single peony “Claire de Lune”

Recognizing the value of a peony variety that performs well in the landscape, the American Peony Society developed an Award of Landscape Merit for cultivars that do not require support and are vigorous garden varieties.  When choosing a peony for your garden, consider one of these.

Japanese peony “Sword Dance”

Peonies are not just for the garden. They make wonderful cut flowers as well.  For maximum vase life, harvest them when the bud is coloured, rounded and soft to the touch, keep the vase out of direct sunlight and change the water frequently (peonies like cold water and I have started to add some ice cubes to the water in the morning).  This should give you 6-7 days of vase life.  The blooms are so large that it only takes a few to fill up your vase.

Treat yourself and purchase a peony for your garden.  One can never have enough peonies!

Peonies as cut flowers

“Flowers are the music of the ground. From earth’s lips spoken without sound.” – Edwin Curran

Resources

http://ccenassau.org/resources/peonies

https://peony.ca

https://www.treepeony.com

Native Shrubs

By Cheryl Harrison, Master Gardener

In the spirit of adding more native plants to my garden in order to help support diversity, native pollinators and birds, I recently purchased a New Jersey Tea shrub.  Of course, it is also a new-to-me plant so I could not resist!  This made me start thinking about other native shrubs that I could use in my garden….I already have some of the usual non-natives like hydrangea, lilac, forsythia and a few of the dwarf conifers.  But, much to my surprise, I realized that I also have, in addition to the new-to-me New Jersey Tea (Ceanothus americanus), downy arrowwood (Viburnum rafinesquianum) , dogwood (Cornus species) and ninebark (Physocarpus opulifolius)! 

New Jersey Tea – My newly purchased shrub is just a baby….it is barely 13 cm (5 inches) tall but will grow to be about 1 meter (3 feet) tall.  I will need to protect it from the rabbits, who also inhabit my garden, by caging it with chicken wire.  New Jersey Tea prefers full sun and well drained soil.  It produces small white flowers in oval clusters at the branch tips in spring.  It is hardy to zone 4.  Additional information is available here.

Downy Arrowwood – My arrowwood is blooming right now.  It is covered with clusters of tiny white flowers and many native pollinators.  The flowers will be followed by blue-black berries that the birds love.  Arrowwood prefers poor, well drained soil…..ours is planted at the edge of a gravel walkway. It can take part-sun to shade and is hardy to zone 3.  At maturity, this multi-stemmed shrub will be 1.8-2.4 meters (6-8 feet) tall.  Additional information is available here.

Dogwood – There are a few different species of dogwood native to Ontario including Pagoda dogwood (C. alternifolia), bunchberry (C. canadensis) and Red Osier dogwood (C. sericea).  There are more but this group are hardy to at least zone 5 (Peterborough area).  They vary in height and growing condition requirements.  For more information on dogwood look hereThe Peterborough and Area Master Gardeners also have a fact sheet available on dogwood here .

Ninebark – Ninebark is a great native shrub for your garden.  It adapts to lots of different soil conditions and moisture levels including drought once established.  It is hardy to zone 3, has pretty white blooms in summer and attractive fall foliage.  I must admit that ours is planted in good garden soil and is mulched to minimize weeds and for moisture retention so my ninebark has it pretty good.  This shrub does prefer full sun for best bloom production. The Peterborough and Area Master Gardeners also have a fact sheet available on ninebark here.

Remember that all new plants need to be coddled for their first year in your garden so keep them watered and watch for insects or critters that may cause damage.  For me, that is fairly easy because I am often out in the garden admiring my new plants!

For more native plant choices and other pollinator information, check out Pollinator Partnership Canada under Resources.  June 20-26/2022 is Pollinator Week in Canada.  Why not celebrate by adding one or more native plants to your garden?