A Garden Design for Shade

September and October have been very busy gardening months for me so I’d like to share some of what’s been keeping me outdoors and digging up my yard!

The thing I really love about gardening is that if a design doesn’t work, you can always change it. This autumn I decided to rearrange and enlarge my shade garden, a smallish space that included a birdbath, ajuga, bleeding heart, hostas, ferns, brunnera, a clematis and cimicifuga (bugbane) planted together in a tiny tapestry of color and form. (In the photo below the old-fashioned pink bleeding heart has already gone dormant and the purple clematis isn’t visible) I had originally planted the bugbane off to one side of the birdbath on the right and placed two large hostas behind it but after a few years this large plant overwhelmed the hostas, hiding them from view, and limiting the morning sunlight they received. I had to rethink my design and reposition these plants to enhance their beauty and create a more pleasing vignette. At the same time, I wanted to expand the overall size of the garden using plants I already had on hand.

The original shade garden (Photo by Nancy Marie Allen)

Once the weather cooled off in mid-September I dug up the cimicifuga, separated it into three clumps and repositioned these in back of the garden. Although these plants and most of the green lady ferns have already died back and are not visible in the following photos, they will create a tall backdrop for next year’s garden. The large ‘Royal Standard’ hosta (which you can see behind the birdbath above) was relocated to the space vacated by the bugbane where it will receive the extra sun needed for abundant blooms. A ‘Gold Standard’ hosta was moved to the left and a little behind the brunnera to brighten up that darker area. After moving these plants to their new homes, the stage was set to add more shade plants and expand the existing garden.

Variegated Solomon’s Seal will add a vertical accent and glimmer of white behind the blue brunnera while golden hostas and Creeping Jenny will draw the eye in (Photo by Nancy Marie Allen)

On the far left side where the shade from a hemlock kept the lawn from growing was a similar sized area just right for planting with more shady beauties. In the spring I’d incorporated some compost into the soil and added some Sweet Woodruff to quickly fill in and cover ground. A layer of mulch kept it moist over the hot and dry summer months. Now, I worked filling the space just to the right of this groundcover with more compost and shade-loving plants. A white ‘Bridal Veil’ astilbe, some variegated Solomon’s Seal, a small white-edged hosta and ‘White Nancy’ lamium were added to the garden while more Japanese painted ferns were repeated, marrying the old design with the new. I continued by spreading the dark purple rosettes of ‘Black Scallop’ ajuga and tendrils of bright ‘Creeping Jenny’ in the foreground to define and soften the curvy edge. When all the perennials were in, I added 50 critter-proof bulbs of allium ‘Cowanii’ for striking white accent blooms in late spring and early summer.

Next spring the newly planted left side of the shade garden will fill in with Sweet Woodruff, Japanese painted ferns, ‘Bridal Veil’ astilbe and more hostas (Photo by Nancy Marie Allen)

Although most of the plants are now beaten and bedraggled from several cold nights, you can still imagine how the garden will look next year when each month will bring something new! It’ll be stunning in spring with the blooms of pink Bleeding Heart, the deep purple flower spikes of ajuga, the delicate blue sprays of brunnera and the white flower clusters of Sweet Woodruff; even the Solomon’s Seal will be sporting tiny white bells along its tall stems. As the season progresses, the feathery white plumes of the astilbe, along with the white flowers of the allium bulbs and ‘White Nancy’ lamium, will share the stage with the purple ‘Arabella’ clematis. Summer will bring spikes of hosta blooms in shades of white and pale lavender while the towering cream-colored wands of the cimicifuga will take up the rear. Behind the stone wall, three new Pieris planted in May will slowly join with the mother shrub to form an evergreen and deer-resistant hedge behind the shade garden, uniting it with the woodland beyond.

Pieris shrubs edge the woodland behind the shade garden (Photo by Nancy Marie Allen)

The varied shades of blue and purple in the foliage of the ajuga, the Japanese painted ferns, the ‘Looking Glass’ brunnera, and large blue-leaved hosta are enhanced by the sunny greens, golds and accents of white also repeated throughout. Even when little or nothing is blooming, the many colors, textures and forms of the shade plants themselves will keep this garden looking lively and bright!

Creeping Jenny behaves best in pots (Photo by Nancy Marie Allen)

A word of caution! Golden Creeping Jenny (Lysimachia nummularia ‘Aurea’) is an aggressive spreader and considered invasive in many areas. I like to use it in pots and planters where it’s easily contained and nicely fills the role of ‘spiller’ with its trailing habit. However, in the garden, this innocent-looking plant with its tiny bright leaves can spread like wildfire! Each year, I keep it in check by removing large segments and pulling it back from crowding other plants. I’ve found that the ‘Black Scallop’ ajuga, another vigorous spreader, seems to hold its own next to Jenny since its thick mat of rosettes prevents other plants from easily taking hold.

DISCLOSURE: This post contains affiliate links to the companies listed below. When you click through on a link and make a purchase, I may make a small commission at no additional cost to you. As an Amazon Associate, I earn from qualifying purchases. Thank You! 

Botanical Interests

BloomingBulb

Bonsai Boy of New York

Garden Thugs or Helpful Heroes?

The Fine Line Between Invasive and Enthusiastic

I grow several plants in my zone 6 garden that are considered “invasive” or plants that tend to spread rampantly.  If you look on your State’s website, you will find a list of invasive trees and plants that should never be planted in your area.  Purple Loosestrife, for example, is an aggressive grower in New England that is taking over marshes and ponds, choking out wildlife habitat.  I’m not talking about the plants that have been blacklisted but instead the ones you can purchase from your local garden center that are best described as “enthusiastic” growers.  Over the years I’ve discovered there’s a fine line between plants that are considered garden thugs and those that are helpful heroes.  It’s all in how you use them.

Using Groundcovers

Many groundcovers are aggressive spreaders.  As the name implies, these are generally plants that will cover a lot of ground and do it quickly!  Groundcovers can be extremely valuable in covering unsightly areas of our yards where other plants won’t grow.  For this reason landscapers love them but new gardeners may hesitate to bring these rowdy boys home.  The trick with using assertive spreaders is to keep them from getting out-of-bounds.

A case in point is the innocent looking “Creeping Jenny” with its diminutive chartreuse leaves.  Planted in rich garden soil, this bright gem spreads like a bad case of poison ivy and can easily take over your flower bed.  I know this from personal experience!  But I love the bright green color and delicate appearance of this plant, so I use it where it can be left to its own devices  – in semi-shaded bare spots around the yard or combined with other plants in flower pots where its rampant growth is confined.  In the right spot “Jenny” may even reward you with bright yellow summer flowers.

Creeping Jenny with Obsidian Heuchera and Hosta
Creeping Jenny shines with Obsidian Heuchera and Hosta (Photo by Nancy Marie Allen)

Another popular groundcover is Ajuga or Bugleweed.  The common Ajuga reptans brightens my yard with beautiful blue or white flower spikes in May.  It tends to spread into the lawn but, dug up and replanted in early spring, you can easily direct this plant where you want it to grow.  Ajuga appreciates semi-shade but will adapt to full sun given adequate moisture.  Two varieties that I love are “Black Scallop” and “Chocolate Chip” whose striking foliage looks good all season.  (See photos below)  Deep blue flower spikes are a bonus in the spring.  Although Ajuga spreads quickly, it plays well with others in my garden beds and is easily divided and moved to other areas.

A native groundcover that I’ve used extensively in my yard is Vinca minor, also known as “Periwinkle” or “Creeping Myrtle.”  In April, the glossy dark green foliage is covered with light blue flowers that positively sparkle in the sun.  Vinca thrives along the bright edges of the woods and quickly covers large areas.  On the aggressive side with its long runners attaching to any bare soil, this groundcover is best left to its own space where it will fill in to form a lush green carpet.  One stunning early spring combination is the twinkling blue flowers of Vinca planted at the feet of bright yellow Forsythia!

Vinca Minor
Vinca Minor  (Photo by Nancy Marie Allen)

Giving the Big Boys Room

Although we don’t usually think of our tall perennials as invasive, there are some big boys that tend to spread aggressively and quickly.  Large clumps of sun-loving Shasta daisies, tall daylilies, phlox and perovskia can become almost shrub-like in size, easily overcoming a small garden.  Tall grasses also make a big statement and need lots of space to spread.  If you love big plants, give them plenty of room at the back of the border where they won’t dwarf your smaller perennials OR group them in a bed by themselves.

IMG_1087
Purple Fountain Grass easily dwarfs its neighbors (Photo by Nancy Marie Allen)

In the semi-shade garden, Grape Leaf Anemone is another back-of-the-border plant that can quickly grow to three feet tall and wide, and the long flower stalks may need support.  Valuable as a prodigious late summer to early fall bloomer, the pale pink to mauve blooms blend beautifully with late-blooming hostas and Rudbeckia.  Because of its robust constitution, it may need to be thinned out in early spring to keep it from taking over but it’s worth the extra effort just to enjoy the spectacular late season show!

grape leaf anemone
Grape Leaf Anemone (Photo by Nancy Marie Allen)

Go Ahead and Grow It Anyway

The only way we learn about the nature of plants is to grow them ourselves.  Remember that whatever a plant’s reputation, your experience with it will be unique to your climate and growing conditions.  Don’t be afraid to try a plant with an eager temperament; just plant with restraint if using in established flower beds and monitor its habit over the growing season.  Alternatively, if you want to cover a shabby area and turn it into something you’re proud of, using these vigorous spreaders can give you almost instant gratification.  So, go ahead and take a few of these plants home for a test drive.  Only then will you discover who are the garden thugs and who are the helpful heroes in your garden!

DISCLOSURE: From time to time I may use Affiliate Links such as the ones below.  I use these only for companies I trust.  When you click through on the link and make a purchase from the website, I may make a small commission (at no additional cost to you) which helps me to maintain my website.