Northern Shade Gardening

Pretty Perennial Leaves for the Shade

Saturday, June 4, 2011 Category: Garden Design

Here are some foliage plants for the shade garden with pretty leaves. These perennials add beautiful texture, colour and shine to shady areas, even when not in bloom.

spring garden foliage

spring garden foliage

On the upper left is a combination of Asarum europaeum (European ginger) in front and Athyrium ‘Lady in Red’ (lady in red fern) behind. I especially like the pairing of shiny, rounded heart shaped leaves of the ginger with the feathery fern fronds. ‘Lady in Red’ has a fresh, light green colour, but the centre of each frond is red when they first emerge. The foliage pairing is appealing all season long, and both do well with very little light.

On the upper right is Heuchera ‘Green Spice’ (coral bells). Most of the Heuchera have great foliage, but ‘Green Spice’ stands out for its wonderful contrast of purple red veins on a light silvery green background. The darker green border around each leaf completes the colourful package. The large scalloped leaves look super next any plant with feathery leaves.

In the middle on the left are Tiarella ‘Jeepers Creepers’ (foamflower) leaves with deeply cut lobes and a dark contrasting line down the middle of each section. These perennial leaves make an attractive evergreen groundcover, topped by pretty spikes of flowers.

In the centre of the collage is a  Hosta ‘Patriot’ that is still unfurling. I like the creamy white bands around the margins of the leaves, since get you attention as you scan along in the darker areas of the shade garden. ‘Patriot’ adds a dappled effect in the shadows. The large leaves look good next to delicate or finely cut foliage.

On the right side of the centre row is Heuchera ‘Cinnabar Silver’ (coral bells ) with green and purple leaves that have pronounced vein marks. Not all Heuchera have showy flowers, but these get very attractive red flowers later in the summer. A leftover blue Scilla flower is draped over the ‘Cinnabar Silver’.

On the bottom left is Heucehra ‘Raspberry Ice’ (coral bells), which also has the complete package of both wonderful leaves and flowers. Like many Heuchera, the leaves can change colour through the season, depending on the temperature. You can see some of the silver and green leaves, as well as the purplish red ones. One perk with the Heuchera is that the evergreen leaves will decorate the shady garden all year.

On the bottom right is a closeup of the fantastic foliage of Asarum europaeum (European ginger). These shiny leaves have finally been spreading over the last few years to fill in and create a terrific groundcover. I highly recommend these short plants for the front of the border. Although they are a little slow to start spreading for the first few years, they will gradually fill in to great a really nice edging in even your shadiest areas. The high gloss finish adds some sparkle to the darker sections.

perennials with silver leaves

perennials with silver leaves

Above is a collage of  some silver perennial leaves, which are great for bringing highlights to a shady corner. Whether solid, spotted, or patterned silver, the light colour bounces back the few light rays to make it into the shaded sites under the trees, making them stand out and be noticed.

At the top is Pulmonaria ‘Samourai’ (lungwort) with mostly solid silver leaves. Each leaf is long and narrow, with a slender border of green and a central green vein. This make a light coloured background for the blue flowers. These silver grey ‘Samourai’ looks great next to solid green or dark leaves.

In the middle row on the left is Zantedeschia araceae ‘Golden Chalice’ (calla lily). I use these as a centre foliage plant in a planter for a very shady area. They don’t produce much in the way of flowers there, but the tall, silver spotted leaves are a great centre piece for the flowering annuals in the pot. I also have a calla lily in another part shade container, where they produce funnel type blooms.

In the centre of the collage is a Brunnera macropylla ‘Jack Frost’ (bugloss) leaf. This is the king of foliage plants for the shade. Everything about the leaves is perfect, from the beautiful silver colour, to the wonderful patterns of contrasting green along the veins. I always have to stop and admire them when puttering around the garden.

On the right side of the middle row is a Pulmonaria ‘Majeste’ (lungwort) leaf. ‘Majeste’ starts off as spotted silver in spring, and gets more of an overall silver colour later in summer. The freckles are cute, and keep the green foliage from fading into the background.

On the bottom left is a Heuchera ‘Mint Frost’ leaf. It is a light silver green, with darker green veins. These are highly variable perennials, as in the spring and fall they can have orange, red and purple leaves, too. However for most of the summer this is the standard colour.

On the lower right is the solid silver leaf of  Brunnera macrophylla ‘Looking Glass’. It produces large leaves, with slender green lines along the veins. This is a real knockout in the shade as it reflects a lot of light.

alocasia calidora elephant ear leaf

Alocasia calidora elephant ear leaf

Here is a very attractive giant leaf of Alocasia calidora (elephant ear). It’s large, wet, and just look at those patterns. The rubbery leaves are about 50 cm (20 in) long right now, and get bigger all summer. I have these Alocasia in a few of my planters in part shade, where they make super focal point for the centre. Elephant ears bring a wonderfully lush tropical look to a planter. In zone 3 they are treated like an annual, although you could overwinter the bulbs inside.  If you’re wondering what the green ‘worms’ are behind the leaf, those are the catkins that just fell from a willow tree.

These are some of the perennial leaves that caught my eye this week when I was out gardening. Although there are lots of spring flowers right now, the foliage of these plants will look great right through until fall. You can see more pictures of great foliage for your shady garden here, and even more photos of  shade plant leaves here.

Sanguinaria Canadensis f Multiplex Double Bloodroot

Thursday, May 26, 2011 Category: Perennials
Sanguinaria canadensis f. multiplex double bloodroot in May

Sanguinaria canadensis f. multiplex double bloodroot in May

I have both the single and double bloodroot in the garden, and appreciate each. However the Sanguinaria canadensis f. multiplex, the  double form, have an exquisite shape. In spring these give you dramatically beautiful blooms in the shade garden, with the white flowers showing up well in the shadowy areas. Although the flowers look exotic, they don’t mind a zone 3 winter.

Sanguinaria canadensis f. multiplex double bloodroot first buds poke from leaves

Sanguinaria canadensis f. multiplex double bloodroot first buds poke from leaves

Here the Sanguinaria canadensis f. multiplex (double bloodroot) are just emerging from the soil in spring. Each beautiful flower bud rises up with a leaf curled around it. On the right you see the initial appearance, and on the left the leaf is starting to part.

Sanguinaria canadensis f. multiplex double bloodroot buds emerging above curled leaves

Sanguinaria canadensis f. multiplex double bloodroot buds emerging above curled leaves

As the leaf uncurls more, the flowers rise up and unfold, so you begin to see hints of a the multitude of beautiful petals.

Sanguinaria canadensis f. multiplex double bloodroot white flowers

Sanguinaria canadensis f. multiplex double bloodroot white flowers

It seems that this perennial can be listed in different ways, and I sometimes see the double labelled as  ‘Flore Pleno’. Sanguinaria canadensis f. multiplex is extra generous with the petals, the exquisite flowers resembling waterlilies. The pure white colour really stands out against the background in the shade. I have two of these double bloodroots, and this year they have bloomed a week before the single version. The double forms are supposed to last much longer than the singles. However,  mine only lasted a little over a week, a brief but beautiful flowering. They are definitely worth finding space in your shady garden. I go out each day to admire the blooms, but the light colour can also be glimpsed from my windows.

Sanguinaria canadensis f. multiplex 3 double bloodroot white flowers

Sanguinaria canadensis f. multiplex 3 double bloodroot white flowers

Bloodroots are native to the woodlands of Eastern Canada, but these are doing fine in the Parkland of Alberta. I have these planted in a very shady area, between the trees. There is a lot of decomposing leaf matter in this garden bed. Although these perennials are supposed to be ephemeral with the leaves fading back after spring, mine keep the foliage all summer, and their unique shape looks good. Perhaps the cooler summers help sustain the plants.

Sanguinaria canadensis f. multiplex leaf closeup

Sanguinaria canadensis f. multiplex leaf closeup

The Sanguinaria leaves are very decorative for a perennial that might hide away for the summer in some areas. The large flat leaves are deeply lobed and stiff, so they make a nice green foil for other plants in the garden. The bloodroot leaf above is looking shiny in the rain. The plants are about 18 cm  (7 in) tall, with the flowers about 23 cm (9 in) in height.

Here  are more pictures of Sanguinaria canadensis (single flowered bloodroot).

Even if you don’t have a woodland, the double bloodroot will do well under the shade of a tree, to bring a little part of the Eastern forest to your garden.

Sanguinaria canadensis f. multiplex closeup of double bloom

Sanguinaria canadensis f. multiplex closeup of double bloom

An Upward Facing Hellebore

Monday, May 23, 2011 Category: Perennials

Helleborus ‘Walhelivor’ (‘Ivory Prince’ hellebore) has a super combination of traits, with attractive flowers, great looking leaves, attractive red stems, a long flowering time, evergreen leaves, and surprising hardiness. Although hellebores are not always considered hardy on the prairies, I’ve found ‘Ivory Prince to be very hardy, down to -40º C (-40º F).

One of my favourite parts of this hellebore are the giant rose pink buds that appear so early in the spring. The ice and snow will be melting at the edge of the leaves, and then the fat buds will start to rise up. Even before they open, they are very appealing, and add instant colour to the left over fall leaves.

Helleborus 'Ivory Prince' showing true flower

Helleborus 'Ivory Prince' showing true flower

The flowers themselves are the small clusters in the middle, while what look like petals are the large decorative bracts around them. It’s the bracts that stay on the plants for so long. In my northern garden, they often stay on right until fall, fading to yellow and looking very much like real flowers.

Helleborus 'Ivory Prince' with cream pink and green flowers

Helleborus 'Ivory Prince' with cream pink and green flowers

What’s especially good about the flowers on this particular hellebore, is that they face upwards and outwards, so they can be admired easily. The petals are a combination of cream, green and pink, set off against the dark green leaves.

Helleborus 'Ivory Prince' with little Chionodoxa

Helleborus 'Ivory Prince' with little Chionodoxa

My plants have been slowly expanding in this tough spot, and now make a good sized clump. The photo above shows about three of the group. Not many perennials are happy  growing 60 cm (a few feet) away from a willow trunk, but the hellebores don’t complain. They get an hour or two of direct early light morning light, with the the sun low in the sky. After that they get a bit of dappled light that filters through the willow leaves.

Helleborus 'Ivory Prince' flower closeup

Helleborus 'Ivory Prince' flower closeup

All of my ‘Ivory Prince’ have survived three zone 3 winters with no problems. We do get good snow coverage, which helps to insulate them. I also leave the fall leaves over the plants for additional protection, removing the fallen willow leaves in spring. It’s possible that they wouldn’t do as well on the wind swept open prairie, but they are very hardy in an enclosed garden.

Helleborus 'Ivory Prince' with spring bulbs behind

Helleborus 'Ivory Prince' with spring bulbs behind

To the south of this group are some spring bulbs. You can see the Puschkinia (striped squills) and Chionodoxa (glory of the snow) in the background.  This clump of hellebores have expanded, so the little Chionodoxa mingle right at the edges now. The red stems are visible in the shot above, making a good contrast with the green leaves.

Helleborus 'Ivory Prince' just opening

Helleborus 'Ivory Prince' just opening

This is a flashback to when the ‘Ivory Prince’ flowers were first opening, with lots of buds still showing pink on the outside, and a little Chionodoxa flower in the bottom left. The leaves are about 20 cm (8 in) tall and the flowers are around 25 cm (10 in) in height. The plants are up to 60 cm (24 in) wide.

Helleborus ‘Walhelivor’ is a particularly charming hellebore, with all of its parts being highly decorative. From the moment the snow melts to show the evergreen leaves, it takes centre stage, continuing to look good through the summer and fall. There are more pictures and information about this hellebore in this post from last year.