Although Ozark Sundrops has absolutely no claim to be native to the Ottawa Valley, this startlingly large flowered species from central US is such a garden-worthy beauty, from time to time we include it in our offerings at Beaux Arbres. The flowers can be 8 cm across on a plant only about 20 cm tall
Ozark Sundrops’s lax stems sprawl just a bit, forming a low cushion, growing from a single tap-rooted crown, so it is never overwhelming. It wants well-drained, lean, neutral soil, and full sun. It does not compete against taller aggressive neighbours. A large sunny rock garden is ideal.
Ozark Sundrops is pollinated by large sphinx moths. Night-flying sphinx moths are not colourful but they are large and attractively patterned in white and cream and grey and brown. They are not attracted to lights, so spending a warm summer evening monitoring a stand of pale-flowered wildflowers, such as Ozark Sundrops, is the best way to monitor which sphinx moths are visiting your garden.
The first part of our two-day hypertufa workshop produced some fine small bowls and troughs.
If you didn’t participate in the first half, you can still come to the planting workshop on Sunday, September 27th. Purchase one or more of the troughs I have made up and have on hand, and plant up your troughs with little arctic or alvar cuties. I will have an assortment of planting media, grit, clay, stone mulch and thin rocks for creating crevices. Four plants — easy, hardy stalwarts all — are included for each trough, and I have other plants to chose from.
The cost for the one day workshop is $65. Troughs are priced individually by size – $25 to $50.
Participants limited to 8. The location is at Beaux Arbres, 29 Ragged Chute Bristol , Quebec. (Map) Register by contacting me via the form below:
These are some of the plant I would have been bringing to the Friends of the Farm Mothers Day Sale on Sunday. They are the best looking bunch of plants I have had in the six years since Beaux Arbres first attended the sale.
However, I can bring them into Ottawa for you next week. We are aiming for Wednesday, May 13th, to bring prepaid orders to a west-end Ottawa parking lot.
We do not have a heated greenhouse. The hoop house gives a little advance on the season and a nice working environment on sunny days, but nights are still pretty cold. We are grateful for small indications of spring. Last year, spring was so dismal through April, even tiny Arctic flowers such as the little yellow Drabas seem impressive to us now.
I saw this lovely little alpine Jacob’s Ladder from the Rocky Mountains in the Alpine Garden of the Montreal Botanical Garden and was happy to acquire some seed from the Ontario Rock Garden Society Seed Exchange. I now have three in our Rock Garden – they seem to have come through the winter – and three in the hoop house. They are not that easy to keep in pots through the summer as they don’t want to be too wet but you mustn’t let them get too dry either. I lost a few last August. They seem sturdier once they are planted into a well-drained site in the rock garden. I am going to build up stock of this little charmer and will probably be able to offer it for sale August of 2021.
Our Shooting Stars are looking great this year. I’ll post lots more pictures when they are in full glorious bloom. This species goes dormant by August. I hope you won’t forget about them ’cause we may not be able to deliver to Ottawa until some time in the summer.
Beaux Arbres’ wildflower seeds will be on sale at the $100 and Under Christmas Sale in Carp this weekend — a chance to pick up some little gifts for the gardeners on your list, and an advance look at some special species new for 2020.
For the first time we are have seeds of the lovely native vining Clematis called Purple Clematis (C. occidentalis). This pretty plant with relatively large nodding mauve flowers grows in woods in the Ottawa Valley but it much less well-known than the white-flowered Virgin’s Bower (C. virginiana). Purple Clematis is rather a wispy thing in the wild, and it is in bloom for only a short period in the spring. In your garden, give it a bit more sun, with much less competition than it struggles with in the woods, feature it on an attractive tuteur or trellis, and it wii reward you with an abundance of bloom. You cannot expect Purple Clematis, a wild species, to rebloom throughout the season, the way fancy modern hybrid clematis do, but lovely swirly seed heads will follow the spring blooms.
The seeds of Purple Clematis need a period of warm-moist stratification, to complete their ripening, before they get their cold-moist stratification. If you want grow this species from seed, get seeds now, before Christmas, to allow you the time to condition your seeds for germination next spring.
We are offering seeds of another very special species clematis: Sugar Bowls (Clematis hirsutissima var. scottii) (featured image). This little gem from the American Rocky Mountains, has no claim to be native to eastern Canada, it’s just super cute. Sugar Bowls is a small, non-vining herbaceous clematis with deep blue urn-shaped flowers, perfect for a sunny rock garden. It too needs a period of warm-moist prior to a period of cold-moist to germinate. Sugar Bowls is so slow to mature — mine took five years to get to blooming size — you won’t find it at the local garden centre.
Three very choice species for which we now offer seeds:
Clustered Poppy Mallow is another slow-to-mature species that you won’t find at the garden centre. It’s bright purple-pink flowers are a delight in the late summer garden but it you want it in your garden, patience is required. Like many of the choicest prairie flowers, it spends its energies in its early years making a deep, very drought-resistant root system. Once the plants are well-established, they bloom and bloom for weeks in mid- to late summer.
Some new seeds I haven’t yet packaged will be available at Ottawa Seedy Saturday in March. Look out for:
White Camas (Anticlea elegans, formerly Zigadenus glauca)
Shooting Star (Dodecatheon meadia)
West Carleton Arts Society’s 5th annual $100 and Under Show and Sale
St. Paul’s United Church, 3760 Carp Rd., Carp, Ontario
Friday December 6: 2:00-8:00 pm Saturday December 7: 9:00 am – 4:00 pm Sunday December 8: 11:00 am – 4:00 pm
My first encounter with this charming little native primrose was on the wave swept shore of Lake Huron, on the Bruce Peninsula, where limestone pavements shelve incrementally down to the water’s edge. Nestled in tiny, moist cracks in the limestone, never far from the spray, were some small pink flowers with yellow centres, Primula mistassinica. I have since encountered this plant in other locations in eastern Canada, almost anywhere there is damp limestone, such as in seepage areas on limestone cliffs. Primula mistassinica is named for Lake Mistassini, the largest lake in Québec.
Brought into the garden, this little primrose flourishes and has many more flowers in each cluster. The buds form the previous year, visible but nestled deep in the basal rosette of leaves, and ready to bloom very early in spring. This is a charming little plant for a damp spot in a rock garden or a trough.
When I initially encountered Primula mistassinica, I called it Bird’s Eye Primrose. I have since learned that that name is perhaps better reserved for a very similar species, with a slightly more eastern distribution, Primula laurentiana, and P. mistassinica should be called Dwarf Canadian Primrose, although getting folks, including me, to alter the common names they learned in childhood is not an easy task. From their written description, I find it difficult to know exactly how the species differ. I decided the thing to do would be to grow them side by side. I was able to acquire some wild-collected Bird’s Eye Primrose seed, from the Ontario Rock Garden Society Seed Exchange, in 2018. The little P. laurentiana seedlings have not yet bloomed for me, and, honestly, did not look that different from P. mistassinica for most of the summer. However, by November, there were some differences apparent: Bird’s Eye Primroses have fewer and broader leaves and they are less persistently evergreen, as we can see in the photo below. Both plants have buds in their centres, ready for next spring’s early bloom.
The Alpine Garden at MBG is divided into areas planted with species from different regions of the world. I was delighted to discover that there was an eastern North America section and that it was planted with many of the species I have been promoting for rock gardens.
Beaux Arbres has offered Prairie Smoke for several years and it is always a popular choice.
A wonderfully showy flower in the South American section, Sisyrinchium striatum or Pale Yellow-eyed Grass is related to our native Blue-eyed Grasses. I was amazed to find this plant from Chile and Argentina growing in Montreal (Zone 5B)l. I started a flat of this species from seed — easy to do — and we’ll see how it does in our Zone 4B garden.
Rock Pink (Talinum calycinum) has been in bloom for weeks and it just got better and better, as long as the warm weather lasted. I love the bright magenta of the flowers against the natural greys of the rocks and stone mulch. I hope it proves to be hardy, here in western Quebec, but even as an annual it is worth growing for mid to late summer colour in the rock garden. Small bees love the flowers.
A useful contrast to all the tall yellow daisies, the bright saturated purple of ironweed (Vernonia sp.) glows in the autumn sunshine. This plant is tall and rugged.
Ironweed and Switch Grass.
Of the many tall yellow daisies for late summer and early autumn, my favourite is Tall Sunflower (Helianthus giganteus). It can be very tall – to 3 metres. That’s a plus. If you are going to do tall, do it! Even small gardens have lots of room in the vertical direction. Tall Sunflowers flowers are a lovely clear yellow and the purple stems are a nice contrast. On warm afternoons the plants hum from the volume of pollinators. After the flowers fade, the seeds are relished by goldfinches.
Now, I warn customers that pretty Heart-leaved Aster (Symphyotrichum cordifolium) is a pushy native that spreads, but let’s face it: most gardens have spots where a tough, pushy plant is just the thing. We have an ancient clump of common lilacs, as do most old farmyards. The lilacs are fragrant and lovely and visited by Canadian Swallowtail Butterflies, for about a week in the spring, and then, for the rest of the summer, they are a big, boring green lump with no fall colour. Heart-leaved Asters are willing to grow in the dry root-filled conditions under the lilacs and bloom in a beautiful pale blue ruff at their feet. Like other asters, they are important for late-season pollinators.
Daisy-form flowers dominate late-season wildflower gardens. Native plants with distinctive and unusual flower shapes are always interesting and even more welcome when they bloom in the fall. This is a white-flowered garden selection of the native Closed Gentian (Gentiana clausa).
This hypertufa trough, planted only weeks ago, is doing remarkably well. I used a technique I read about in the North American Rock Garden Society quarterly, and sandwiched a thick clay mud between vertical slabs. One would think that the little Erigeron pinnatisectus or Feather-leaf Fleabane, perched at the top, would not have had a hope of surviving, but this is a plant of steep slopes and high ledges, and it seems to be thriving. Let’s see how this little garden survives the winter.