Showing posts with label Dicentra. Show all posts
Showing posts with label Dicentra. Show all posts

Saturday, March 7, 2020

New Perennials for 2020 from Terra Nova Nurseries, Inc. + Some Old Favourites


It's a gorgeous day here–sunny and warm enough for the snow to be melting. Though it feels like spring has arrived, I remind myself that it is only the first of March and winter may not be done with us just yet.

 You can see the tangled growth at the base of the lilac in this shot from June 2019.

Even though it is just a common lilac, the flowers are pretty and very fragrant.

Despite the pockets of snow, the dogs and I spent a good part of yesterday afternoon out in the garden. The temperature was mild enough for me to ditch my winter jacket and get to work pruning a neglected lilac. While this is not the proper time of year to prune a lilac (you could cut off all this year's flower buds if you aren't confident in what you're doing) I find it helpful to get a headstart on simple tasks like removing spindly suckers before I get overwhelmed with a long list of other pressing spring chores. That and it's nice to be puttering around outside in the sunshine!

Like me, I am sure you are beginning to draw up a spring wishlist. What interests me these days are plants with unique foliage and flowers. With that in mind, I've put together a list of new introductions from Terra Nova Nurseries that have captured my imagination. And as I promised earlier in the year, I'm also going to highlight some older introductions I think are worth seeking out.

A word about Terra Nova® Nurseries. They use tissue culture to propagate and grow both annuals and perennials.  Based in Canby Oregon, they have introduced over a thousand new plants to market.

As a wholesale propagation nursery, Terra Nova does not sell directly to the public. On their website, they have a handy page that will help you locate a retailer in your state or province that sells their plants (Sadly for Canadians on the East Coast and in Saskatchewan, Terra Nova is underrepresented).

Some of the New Plants for 2020


Geum Tempo™ Rose from Terra Nova® Nurseries


Geum Tempo™ Rose has dark rose-pink flowers on short, dark stems. Moist, loamy soil is prefered. Long bloom time. Full sun. Height: 8-21 inches, Spread: 12 inches. USDA zones: 5-9.


Sedum Peach Pearls has burgundy leaves and rose-gold flowers. Even in its first year, this sedum produces multiple flower crowns. 'Peach Pearls' likes soil with good drainage. Drought tolerant and attractive to pollinators. Full sun. Height: 14-20 inches, Spread: 24 inches. USDA zones: 4-9.


Veronica Vespers™ Blue has blueish-purple flowers. A long period of bloom begins in late spring and runs into mid-summer.  It prefers moist soil with lots of organic material and good drainage. Full sun. Height: 9-13 inches, Spread: 11 inches. USDA zones: 4-8.



Heuchera Northern Exposure™ Sienna has green foliage when it first emerges in the spring. In summer, it becomes a mix of sienna and orange with greenish margins. Fall sees it revert back again to green. Rust resistant. Moderately well-drained soil and average moisture conditions. Full sun to part shade. Height: 13-22 inches, Spread: 21 inches. USDA zones: 4-9.

Other Perennials that Caught my Eye:





Of all the perennials on my list, I would love to get my hands on this one the most! I find Thalictrum to be a terrific option for part-shade. This type of Meadow Rue has lovely ferny foliage, dark stems and star-like flowers. I have the mauve flowering variety but would like to add a white flowering version:

Thalictrum Nimbus™ White has clouds of white flowers and fern-like foliage. The flowers age to lavender-pink seed heads. This perennial prefers moist, humus-rich soil but adapts well to average soil with good drainage. Part-shade. Height: 28 inches, Spread: 16 inches. USDA zones: 5-9.



I have a quite number of Bleeding Hearts, but I don't have this cultivar with its combination of golden leaves and white flowers.

I can just imagine Dicentra 'White Gold' mixed in with tulips and daffodils. Beautiful! Again, it's a great option for the shady area of your garden (although, based on experience with similar 'Gold Heart', I would recommend part-shade for the best leaf color).

Dicentra 'White Gold' has heart-shaped white flowers and golden leaves on a vigorous plant. This perennial prefers moist, loamy soil. Part to full shade. Height: 24-30 inches, Spread: 36 inches. USDA zones: 4-8.



When you're a plant collector, it's hard to resist adding more of your favourites:

Geum Petticoats™ Peach has semi-double peach flowers on a compact plant with green foliage. Moist, loamy soil is prefered. Reblooms. Full sun. Height: 10-12 inches, Spread: 20 inches. USDA zones: 5-9.

Every year I try to invest in at least one new hosta with interesting features. Here are two with very attractive reddish-purple accents:


Hosta 'Purple Heart' has glossy lime-green foliage with red-purple at the base of each heart-shaped leaf. 'Purple Heart' has a neat, uniform growth habit and good slug resistance. Full shade. Height: 15-24 inches, Spread: 30 inches. USDA zones: 4-9.



Hosta 'Raspberry Sundae' is a compact hosta with creamy-white variegation through the centre of the leaf. It has deep burgundy petioles, leaf bases and flower stalks. Its flowers are deep lavender-purple. Part-shade to full shade. Height: 9-23 inches, Spread: 21 inches. USDA zones: 4-9.



Yet another personal favourite is Penstemon (I already have Penstemon 'Husker Red' and 'Dark Towers'). Many of the newer introductions aren't hardy here, but I was very excited to see two that are reputed to be tough, hardy perennials:

Penstemon Dakota™ Verde has violet flowers on dark stems. Seed heads are a lovely dark burgundy color and the foliage takes on a purple tinge in the fall. Average, well-drained soil is fine for this perennial. Full sun. Height: 12-24 inches, Spread: 18 inches. USDA zones: 3-8.



Penstemon Dakota™ Burgundy has violet flowers. This penstemon is shorter and more compact than popular 'Dark Towers'. Average well-drained soil and moisture conditions are fine for this plant. Full sun. Height: 12-24 inches, Spread: 18 inches. USDA zones: 3-8.




I thought I would also throw in a few annuals that caught my attention. Some people struggle with Rex Begonias, but I seem to have good luck with them. I keep them as houseplants year-round in an east-facing window. Each spring, I divide them and move the divisions outdoors to fill part-shade containers.

I often take cuttings in the fall and keep Coleus over the winter as houseplants. Last fall I didn't have a chance to take the usual cuttings, so this spring I am definitely in the market for some new plants. Here are a couple I am going to watch for:



I hope this post has inspired you to add a few plants to your own wishlist for 2020. 
Have a wonderful weekend!

Photos in this post are courtesy of Terra Nova Nurseries. www.terranovanurseries.com

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Tuesday, March 18, 2014

Garden Canadensis, Part 2: Planting Combinations for Shade


Throughout the garden, and especially along its outer perimeter, mature trees cast pockets of the Chen and Linda's magnificent garden called 'Garden Canadensis' into shade and part shade. 

What I think will surprise and delight you is just how vibrant shady areas in a garden can be.

Here then are some of the many wonderful plant parings from Garden Canadensis for shade/part shade, with a brief explanation of why each combination works, as well as a bit of information on a key perennial in each grouping.


Plant combination: Dicentra 'Stuart Boothman' and Hosta 'Dancing in the Rain' 

What's nice about this mix is the combination of fern-like foliage and the large, broad leaves of the hosta.

Chen writes: 

"I like all Dicentras, the fern-like leaves and the dainty flowers, and would like to have all varieties if I can, eventually. Ideally, I try to plant them in the shade of some trees with enough sunlight for decent blooms, but not so much that their leaves deteriorate too quickly into summer."

Dicentra 'Stuart Boothman' which is pictured above and has pale pink flowers and greyish foliage.
Dicentra 'Aurora' A good reliable creamy white dwarf Dicentra.
Dicenta 'Bleeding Hearts' Chen writes, "This is probably the most showy Dicentra, although it is not vigorous in my garden. I have lost 2 trials mostly because of vole problems."


Plant Combination: Brunnera 'Jack Frost' (left) with Heuchera 'Silver Scroll' (in the foreground) and Hosta 'Fire and Ice' (in the upper right).

What's nice about this combination: Both the Brunnera and the Heuchera have silver foliage, but they couldn't be more different or more complimentary. The cream of the hosta's foliage adds that all important element of contrast.


Plant Combination: On the right is Pulmonaria longifolia 'Diana Clare' and to the bottom left is a deciduous rhododendron: Rhododendron schlippenbach which the "rabbits like to chew on". Above them is a hosta with a lots of cream trough the centre of its dark green foliage.

What's nice about this combination: I would particularly like to draw to your attention to the silvered-grey-green Pulmonaria. Chen notes that:

"The quiet beauty of Pulmonarias is indispensable for the shady parts of my garden. The flowers may be early and brief, but their foliage is highly ornamental from early spring into late fall. In mid-summer they typically go through a decline, but this can easily be taken care of by removing their foliage. New foliage will emerge, and be ready, as the weather is cooling off.
They appear to self-sow readily (but not wildly) in my garden. This presents a problem for keeping the named cultivars intact after a few years. I suspect that many Pulmonarias on the market are just derivative seedlings of some kind. For the same reason, many name cultivars are not that distinct from each other."

Just a few of Chen's Pulmonarias that caught my eye are :

Pulmonaria 'Diane Clare' shown above has pale blue flowers:"Its foliage is highly ornamental for the whole season. It is a very vigorous Pulmonaria."
Pulmonaria 'Opal' which has white flowers. Chen describes this variety as a "must have".
Pulmonaria 'Raspberry Splash' which is a vigourous plant with showy red flowers and is "one of the best Pulmonarias".




Plant Combination: Chen tells me that the neat green mound at the front of this planting is Buxus microphylla 'Kingsville'. It is "probably the most dwarf form of boxwood, and is popular to use in bonsai."

The large golden Heuchera in the centre of the picture is Heuchera 'Carmel'. In front of 'Carmel' is what Chen describes as a"very weak, but pretty" Heuchera 'Autumn Leaves' (with reddish foliage). 

In the lower left corner is Heuchera 'Christa'. Behind 'Caramel' and to the right with the purplish-green foliage is Heuchera 'Petite Pearl Fairy'. Peaking out from behind it is the green foliage of Heuchera 'Silver Scroll'.

What is interesting about this planting is how multi-colored it is despite the shade conditions and minimal flowers.



Planting Combination: On the top left is Hosta 'Sagae'. Below it is lime colored Hosta ' Blaze of Glory'. 

With tiny white flowers in the centre is Corydallis ochroleuca. Peaking out from the lower right is Heuchera 'Delta Dawn'. Bending over the whole group is a Japanese Maple Acer palmatum 'Peaches and Cream'.


It may be primarily one color: green, but what makes this combination work is contrast. There are the cut leaves of the Japanese maple, the large leaves of the hosta and the small, dainty fern-like leaves of the Corydallis ochroleuca. Each green is distinct and mixed together they are actually quite colorful.

An excerpt from Chen's notes on Corydallis:

"This is a delicate and elegant class of perennials like their relative, Dicentra. The blue flowered varieties are particularly precious, but they are not the easiest to grow here. I like Corydallis enough that I tolerate some of them that tend to self-sow wildly, bordering on weedy. Fortunately, they are relatively easy to weed...
Corydallis ochroleuca is an important filler plant for me; both for the foliage and the flowers...."




Another beautiful Japanese Maple, Acer palmatum 'Shigitasu sawa' which Chen 
says is one of his favourite maples.



When I was going through my pictures, I came across this planting and was surprised to see hostas and conifers grouped together. I had always thought that most conifers needed sun. So I asked Chen about it. 

"I would estimate that this part of the bed is at least in 50% shade, if not more. Those conifers are not afraid of shade at all, especially the Alberta Spruce (I have some in very dense shade). The blue conifer in the front and the bright green conifer behind it are the common Chamaecyparis pisifera 'Boulevard' and Chamaecyparis obtusa 'Gracilis' respectively. They can take full sun to a fair amount of shade.", Chen tells me.

What's nice about this combination: I love the way Chen has echoed the bluish-green color of the Chamaecyparis pisifera 'Boulevard' with the frosty, blue-green Hosta 'Regal Splendor'. The lime colored hosta in foreground is Hosta 'Silk Kimono'.

The maroon foliage of the Japanese Maple makes a perfect counterpoint to all the cool greens.


I am embarrassed to admit that I used to think hostas were kind of boring! In truth, I just hadn't seen anyone use them quite so imaginatively. 

Plant combination: Hosta 'Sum and Substance' (upper right) and Hosta 'Smooth Sailing' (in the foreground) light up in contrast with the deep, dark plum leaves of Ligularia 'Britt Marie Crawford'. Not only is this color combination sublime, this mix of perennials offers an interesting variety of leaf shapes and sizes as well.

Chen speaks highly of the contribution hostas make to any garden, particularly a northern one:

"I would think hosta is an essential perennial for the northern garden...They add an element of large leaf texture that is not prevalent in northern vegetation (in comparison with tropical environments).
 Depending on the variety, hosta can take full sun to full shade, and are hardy and (practically) maintenance free (except for the HVX virus). Unfortunately, it is often relatively expensive for a fair sized specimen, and takes years to develop into a nice size clump...Although I am not a Hosta addict by any means, I do like to acquire a few each year since they are so useful, elegant and take care of themselves."


Here is another combination that includes conifers in shade conditions. Chen tells me that this area, "... only sees sunlight very early in the morning, and for a very short time at noon, when the sun passes between the large conifer, and the cover of a forty plus year old crabapple tree. I would estimate that this part of the garden has 60% shade or more."

Plant combination: The light green conifer in the back is Juniperus rigida. As well as several hosta, there is a Japanese maple on the left: Acer shirasawanum 'Jordan' and the lime colored maple on the right: Acer palmatum 'Purple Ghost'. In the foreground with tall red flower spikes is Rheum palmatum 'Atrosanguineum'.

Why this combination works: Each and every plant contributes something new and appealing to the grouping. Every green is distinct and the deep maroon of the maple adds a nice punch of warm color. The mixture of scale and texture makes an area that is largely green anything, but boring.


A few more examples from Chen's hosta collection. On the left is Hosta 'Gypsy Rose' and on the lower right is Hosta 'Orange Marmalade'. The lime colored hosta behind it is Hosta 'Ogon Amagi'.


In the foreground of the righthand picture you can see a very unique hosta cultivar that has upright foliage. In the picture on the right you can see Chen's photograph of it in flower. This is Hosta 'Praying Hands'.



This paring is quite stunning don't you think? 

Plant Combination: The vivid chartreuse of Hosta 'Sun Power' practically glows in contrast with the deep maroon of the Japanese Maple, Acer palmatum 'Tamuke yama'.

Up next will be perennials and plant combinations from 'Garden Canadensis' for sun.