Category Archives: New Gardens

GreenUP Ecology Park Spring Sale

By Suzanne Seryck, Master Gardener

GreenUP Ecology Park Spring Sale – Saturday May 18th 2019

The GreenUP Ecology Park  has often been called a hidden gem, it has been in Peterborough in its current location for 25 years, but many people are still unaware of its existence. I first discovered the park approximately 8 years ago when I was researching native plants. At that time I wanted to plant a large perennial bed filled exclusively with native plants. I spent all winter researching the plants I wanted and where I could buy them locally and came across the Ecology Park and better still discovered they were holding a spring sale.

I dutifully arrived on the day of the sale 5 minutes after opening only to discover a very, very long line of people all carrying totes, boxes, bags, anything that could be used to carry plants. Even though it was incredible busy I was able to find almost everything on my list with help from the many knowledgeable volunteers and staff that were on hand to help. I was quickly and efficiently processed through the payment line, and was soon on my way home to start planting. The quality and choice of plants was extensive, and I knew then that I had found something special. I have been returning to the Ecology Park every year since either as a customer or as a volunteer.

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Native plants are plants that grow locally in a particular area. Whether you are planting an entire garden of native plants or simply planting one or two, the benefits are numerous. Native plants tends to be more hardy to the local conditions, needing less watering, and next to no pesticides or fertilizers. They can improve air quality, help in managing rain water runoff and maintain healthy soil as their root systems are deep and help prevent soil from compaction and erosion. Native plants provide both habitat and food sources for wildlife, as many native pollinators rely on native plants. There are numerous interesting articles on the internet detailing the benefits of planting with native plants – I have listed a few below. There are also links to two other native plant nurseries (in addition to Ecology Park).

Why Native Plants Matter
Benefits of Native Plants
List of Native Plants in Ontario
(from Ontario Wildflowers – a comprehensive list)

Native Plants in Claremont
Ontario Native Plants (online only – ship from Hamilton)

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This year the GreenUP Ecology Park Spring Sale is being held on Saturday May 18th from 10 am until 4 pm. As well as trees, shrubs and wildflowers you can also buy vegetables and annuals at the sale along with compost, mulch and wood chips, but make sure you bring your own containers to hold the compost or mulch. A list of available trees, shrubs, wildflowers and grasses is available on the Ecology Park website.

Children are welcome, even encouraged. While you shop there is a large children’s play area complete with a willow trail and cedar maze to keep them entertained. Be sure to check out the latest addition to the park, the new children’s education shelter which has been built using sustainable practices.

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And finally, the Peterborough Master Gardeners will be on hand wearing their red aprons between 10 am and 2 pm to answer any gardening questions you might have. Be sure to stop by and say hello!

Happy Easter!

By Sharleen Pratt, Master Gardener-In-Training

I hope that you have had a good weekend with family and friends and had a chance to enjoy a little time outdoors. This time of year brings thoughts of spring bulbs, budding trees and the sound of birds which are getting very active. It won’t be long until we see our first hummingbirds in the Peterborough area.easter-3123834_640

A planned outing to some of your favourite garden centres at this time of year can be fun and educational. We are lucky here in Peterborough and the surrounding area to have a number of excellent nurseries that carry quality plants and have knowledgeable staff to help with your questions.

Go to gardenroute.ca for some amazing local businesses that specialize in being growers, maintaining gorgeous display gardens and full service garden boutiques. Members of “The Route” are Anna’s Perennials, Avant-Garden Shop, Blossom Hill Nursery, Gardens Plus, Garden Style Bridgenorth, Greenhouse on the River, Griffin’s Greenhouses, Johnston’s Greenhouses, Keene on Gardens and Williams Design Studio.

PGS-logo-tinyAll of these businesses and more can be found this weekend at the Peterborough Garden Show. It runs from Friday, April 26th to Sunday April 28th. The Peterborough & Area Master Gardeners will be there giving gardening advice and are available to answer all your questions! Come visit us at our booth. We are the ones with the red aprons! This year’s show is in a new venue, Fleming College’s Kawartha Trades and Technology Centre. Lots of free parking and the cost is only $10.00 which gives you access to the show for the whole weekend. There are many wonderful speakers and workshops. All the proceeds go back to the community. Check it out at peterboroughgardenshow.com.  Hope to see everyone at the show!

The Peterborough Garden Show

By Mary-Jane Pilgrim, Master Gardener

It’s coming in 25 days.  It can’t come soon enough.  In our city, “The Garden Show” is a true sign of spring.  It’s an occasion that brings together speakers, workshop leaders, vendors, horticultural society members, master gardeners, exhibitors and many others for one reason:  “For the Love of Gardening”.PGS-logo-small

This year marks the 19th fantastic show: 
April 26 – 28, 2019 (Friday 5-9pm, Saturday 10am-5pm & Sunday 10am-4pm).

And there’s great news ! The show has MOVED – to Fleming College’s brand new Trades and Technology Centre on Brealey Drive with lots of FREE parking and a $10, one-price ticket so you can enjoy the show all weekend.

The Peterborough and Area Master Gardeners will have a booth at the show, and will be happy to answer any gardening questions that you may have. Watch for our red aprons!

The theme “Coming Up Roses” is reflected in several of the amazing speakers along with educational and fun workshops and demos.

This award-winning show was honoured in 2017 with both a “Canada 150 Garden Experience”, and “Garden Event of the Year” by the Canadian Garden Council, so come and see what all the fuss is about.

You will find many of your old favourite vendors along with some new ones.

…and don’t forget the popular “Little Green Thumbs” Children’s Garden that is always teaming with liveliness and action! There are learning activities, face painting, crafts and even a take-home project. Their theme this year is “Miniature Gardens for Elves and Fairies”.

All the show profits go back into our community to fund scholarships for post-secondary students studying in horticulture-related fields,various local projects & Community Gardens.  Since 2002, the show has put over $200,000 back into our community.

Please save the date, visit and and learn why “Everything’s Coming Up Roses” in 2019.

Learn more about the incredible speakers, workshops, bus trips, places to stay and tickets here: peterboroughgardenshow.com.

 

Truth or Fiction? Are Black Walnuts Toxic in my Garden?

by Emma Murphy, Master Gardener

As a Master Gardener, one of the most common questions I get asked is about the toxicity of walnut trees (Juglans nigra).

“Well I heard that the juglone stuff in the roots kills everything and that I can’t plant anything under or anywhere near a walnut tree.”

Well yes Virginia, you can plant a garden under a walnut tree, and have it thrive. Let’s look at Exhibit 1 below – an established perennial bed under a walnut tree. It’s at our house, so I guarantee it’s real, and it’s been there since late 2007.

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Lots of lovely perennials here – hostas (Hosta spp.), daylilies (Hemerocallis), bearded iris (Iris germanica), summer phlox (Phlox paniculata), wild ginger (Asarum canadense), purple coneflower (Echinacea purpurea), ditch lilies (Hemerocallis fulva), although those last ones are doing just a little too well LOL. Don’t believe it’s a walnut tree? Here’s a photo from a bit further back on the street.

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Yes, she’s a big old lady – we think she was planted around the same time the house was built, making her about 140 years old. I think she’s getting a bit tired out – most years she doesn’t produce too many walnuts. Her slightly younger cousin is to the left of the barn in the background – LOTS of walnuts off her (and yes a garden under that one too).

So where does this fallacy come from that ‘nothing grows under a walnut’? Well certainly all parts of the walnut tree contain a chemical called juglone (heck it’s even in the Latin name!). Juglone is a chemical that affects other plants growing nearby (a phenomenon called allelopathy). Simply put, allelopathy involves “living or dead plant parts that release chemicals into the soil which have an effect on other plants—positive or negative.” For walnuts it seems like an attempt at self preservation, with juglone acting like a natural herbicide on other plants.

As Professor Linda Chalker-Scott explains in her recent (2019) peer-reviewed Washington State University Extension paper, damage to tomatoes and other crops near walnut trees in the 1920s caused people to believe that toxic chemicals were involved, and this perception persisted and became widespread despite there being no evidence (and this was before social media existed!). The US Department of Agriculture did field testing – no problems. When applied in a laboratory setting to seeds and seedlings it did cause stunting, wilting, and necrosis, but the specific way it did this was unclear. The most recent science suggests that juglone disrupts photosynthetic and respiratory pathways and interferes with water uptake in plants.

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So! It does affect plants – the laboratory says so. Well yes, and no. Field tests do not support the laboratory work, which doesn’t accurately mimic real life conditions in your average residential garden (again, for more detail read the excellent paper referenced above). Two very old University Extension papers (1973 and 1993) continue to be used to state which plants are ‘sensitive’ and which are ‘tolerant’. However these were simply observational papers—meaning that they correlate the presence of walnut trees with damage to other species but do not confirm a causative relationship. Neither should be considered good scientific evidence.

Gardening With Walnut Trees – My Story

I am sure the scientists, arboretums, farmers, and garden writers will continue to debate this topic for a while. Meanwhile, here’s our story. In 2007 I wanted a garden bed under our black walnut in my front yard. At the time I had heard the walnut horror stories, so I thought – well, how about I just don’t disturb the roots of the tree? (not a good thing to do when establishing any garden beds under a tree). I put good topsoil and compost down, making sure to minimize tearing up of the soil and roots, and planted, and watered, and waited. Things grew. Winter happened. Next spring plants came up. For the most part I just moved perennials that were already on site, although some hostas were new. Here’s the garden in 2008 in the fall.

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Fall asters (Astereae spp.), sedums (Sedum ‘Autumn Joy’ in this case), hostas (Hosta spp.), wild ginger (Asarum canadense), fall rudbeckias (Rudbeckia fulgida and triloba), purple coneflower (Echinacea purpurea), ninebark (Physocarpus opulifolius), iris (Iris spp.), astilbe (Astilbe spp.), sweet woodruff (Galium odoratum), Ozark sundrops (Oenothera macrocarpa), coral bells (Heuchera spp.), cranesbill (Geranium spp.). All doing just fine.

And 2009 below, in the spring. Irises (Iris spp.) lemon lilies (Hemerocallis lilioasphodelus), lungwort (Pulmonaria spp.), poppies (Papaver rhoeas), ditch lilies (Hemerocallis fulva), variegated solomon’s seal (Polygonatum odoratum ‘Variegatum’), bracken (Pteridium aquilinum), bleeding hearts (Dicentra spectabilis), daylilies (Hemerocallis spp.).

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Certainly, planting in general under walnuts is challenging – they cast dense shade and have extensive, water hungry root systems. Watering after establishment and for the first season is critical. We also had our walnut tree pruned professionally (it needed it) so it actually gets decent sunlight in the latter part of the afternoon. Like any fruit or nut tree they are messy, from their spring pollen to their leaves and nuts…oh those nuts.. 2017 was a crazy year – buckets of walnuts (I even had to engage my neighbours’ lovely children from across the street to help collect them) to 2018, with almost no walnuts. My trees are old too – although well pruned, their leaves drop at that first hard frost. 1

 

In Defence of Walnut Trees

Black walnuts are not all bad, and I will continue to treasure them in my yard. They are an amazing shade tree, are highly valued for their fine grained dark wood (for furniture), a great food source for wildlife and birds, and my white breasted nuthatches’ favourite spot to hide their seeds.

We have definitely had our challenges with our walnut trees, and I’ve learned a great deal over the past 20 years. But one thing I know – I can garden with them around. You can too.

Note: Black walnuts are not the only tree that produce juglone – other members of the Juglandaceae also produce it as well as hickory trees. Butternut, English walnut, bitternut hickory, pignut hickory, pecan, shagbark hickory, mockernut hickory are in the same family.