The Art of Weaving Plants and Place

High Summer in the Perennial Garden

Clematis ‘Multi Blue’ in Wisteria frutescens var. macrostachya ‘Blue Moon’. Photo: Marietta and Ernie O’Byrne

Making a garden is not a gentle hobby. . . . It is a grand passion. It seizes a person whole, and once it has done so he will have to accept that his life is going to be radically changed. There are seasons when he will hesitate to travel and if he does travel, his mind will be distracted by the thousand and one children he has left behind, children who are always in peril of one sort or another. However sober he may have been before, he will soon become an inveterate gambler who cuts his losses and begins again; he may think he intends to pare down on spending energy and money, but that is an illusion, and he soon learns that a garden is an ever-expanding venture. Whatever he had considered to be his profession has become an avocation. The vocation is his garden.

—May Sarton, Plant Dreaming Deep

Lazy, blowsy summer days are here. It is midsummer and the five perennial borders are in full exuberant growth. Six-foot-tall, bright yellow Asiatic lilies have been blooming all through midsummer together with brilliant Crocosmia ‘Lucifer’, and yet the lilies show no signs of fading until early August when they shed their last flowers. Crocosmia ×crocosmiiflora ‘Star of the East’, interplanted among them, carries on the show through late summer. Dark blue Veronica longifolia ‘Marietta’, bought solely for sentimental reasons because my sister’s name is Veronika, makes a beautiful counterpoint to the red crocosmia and yellow heliopsis daisies. The turf and black mondo grass−lined path has become narrower, as it does every year around this time. Since our garden isn’t a public garden, I like the Japanese idea of minor obstructions in the path to slow the hurried gardener or visitor and encourage a closer look at blooms and fluttering swallowtails or velvet-coated bumblebees sipping nectar.

Yellow Asiatic lilies and Veronica longifolia ‘Marietta’. Photo: Marietta and Ernie O’Byrne

Bold or strident, depending upon one’s sensibilities, is the theme in this particular border. Hidden behind the stout banana, a patch of magenta-flowered phlox appears, intermingled with the same ‘Lucifer’ and backed by the vigorous golden sumac, ‘Tiger Eyes’, with lots of luscious green between. After the initial shock wears off, I find it invigorating, as long as it does not repeat to the point of visual exhaustion. Just like a rich dessert, a little is tasty, too much is cloying.

Across the central path lies the south flower bed shaded by two dogwoods and a stewartia. The entrance is marked by a large grouping of pineapple-helmeted racemes of starry-flowered Eucomis bicolor, dressed in skirts of strap-shaped leaves, looking bold and purposeful. Here, as in all woodland gardens, life has taken on green, quieter summer tones—a restful contrast. Late-blooming, tall and dainty, Thalictrum delavayi, with lacy leaves, has umbels of foamy pink on 6- to 8-foot stems that reach up through tree branches and drape themselves over black-leaved pink dahlias. The best and latest of the foam flowers is the double-flowered, albeit sterile, form, ‘Hewitt’s Double’, hard to find but well worth searching for at specialty nurseries.

Helmeted Eucomis bicolor guarding the entrance to the perennial garden. Photo: Marietta and Ernie O’Byrne

Lilium ‘Silk Road’ (Orienpet lily). Photo: Doreen Wynja

Blue-flowered Clematis ‘Rhapsody’ layers itself over and through two onion-domed obelisks at each end of the bed. With a maximum height of 6 feet, ‘Rhapsody’, blooming all summer, never outgrows its support, but with its dense habit covers it with a flower-studded mantle from top to bottom. Heavenly scented oriental trumpet lily ‘Silk Road’ is planted throughout the bed. Six feet tall, with enormous white flowers and crimson-pink throats, its beauty and fragrance have made it one of the most popular lilies in northwest gardens. Its flowers last longer in semi-shade. In the darkest areas under the trees grow summer-flowering Kirengeshoma palmata, maidenhair ferns, painted fern, and silver-centered Arisaema consanguineum, offering a change from the masses of blue delphiniums of earlier sun-drenched years when the trees were newly planted.

Dill seedling and red Crocosmia ‘Lucifer’. Photo: Marietta and Ernie O’Byrne

How different the perennial beds appear now than in late spring. The vigor of erect spring growth has given way to full-flowered buxomness of leaning, mingling, sprawling growth. The invisible hand of the gardener has created magic. What looks like a spontaneous creation of flowers sharing space, of colors that complement each other is an illusion that is a large part of the art of gardening. Dill seed from the adjacent vegetable garden sowed itself into the flowerbeds and became a masterful ingredient, tall, narrow umbels creating a bond between coarser leaved perennials. Allium christophii, vivid, metallic magenta in spring, now with straw-colored umbels, is left standing, holding up taller neighbors at the front of the border, until it finally disperses its seed and topples.

Three more perennial beds along this path show no sign of the summer doldrums. Growth is so dense that most weeds are relegated to the lower darkness and a very thin existence. Deadheading and preventing seed production in order to prolong the flowering season are now the gardener’s most pressing chores. Sometimes a weaker plant needs to be rescued from an over-vigorous embrace of a burly neighbor.

Asiatic lily ‘Giraffe’. Photo: Doreen Wynja

Euphorbia cyparissias, best kept in a container because it can become very invasive. Photo: Doreen Wynja

In this garden, it is hard to talk about midsummer blooming as studied combinations. Intuition is a gardener’s best companion. Some satisfying combinations in the not-so-dog-days of summer are the black-leaved, crimson-red dahlia ‘Mystic Enchantment’ and an equally velvet red nasturtium, a bit of straw-colored Allium christophii, and yellow Hypericum ‘Kolmoran’ Mystical Orange. A little self-sown larkspur here and there and the white, scented, Nicotiana sylvestris for evening pleasure, for both moth and man, are enriched by black mondo grass at the edges of the bed.

Dahlia ‘Forncett Furnace’, bright orange and tall, with Dahlia ‘Mystic Illusion’ and Hibiscus syriacus ‘White Chiffon’ in foreground. Photo: Doreen Wynja

For the aspiring summer-flower gardener, I recommend standing in front of your beds in spring and imagining shapes and colors of summer that will be pleasing to you. Then go to your spring plant sales armed with a vision for your summer garden. It may not all work out at first, but an undaunted gardener will try until utmost satisfaction is achieved. Don’t be swayed or intimidated by fads and fashion; the garden is there to please you, the gardener, first of all.

Zantedeschia ‘Flame’ growing in the same spot as Papaver orientale ‘Tango’, but in midsummer. Photo: Marietta and Ernie O’Byrne

Hardworking Plants for the Perennial Border

One of the most magnificent plants in our summer border is ‘Flame’ calla lily with giant, silver-shot leaves, and, as its name suggests, flaming spathes in red and yellow. Many years ago I acquired a brilliant, true red Oriental poppy, ‘Tango’, in Germany. But Oriental poppies bloom in May, and then leave a big hole in the summer border as they go dormant. I spent much time meditating on that hole. Calla lilies, on the other hand, only rise from giant tubers in June. So, there was the answer. Two plants, one spot. They have been excellent companions ever since.

Red Oriental poppy ‘Tango’ (Papaver orientale ‘Tango’). Photo: Marietta and Ernie O’Byrne

Crocosmia ×crocosmiiflora ‘Star of the East’. Photo: Marietta and Ernie O’Byrne

Various crocosmias can stretch the bloom season from June through September. Starting in June with red Crocosmia ‘Lucifer’, it continues with the yellows such as ‘Citronella’, followed by bright orange, mahogany-throated ‘Emily McKenzie’, light orange ‘Star of the East’, and ending with the smaller, nonspreading ‘Solfatare’, with sulfur-tinged green leaves and apricot- yellow flower spikes. All varieties are hummingbird magnets.

A hint: If you are worried about the spreading talents of crocosmias, each winter after frosts, at cleanup time, cut crocosmias to about 1 foot and not to the ground. With the bed bare, it is easy to fork up unwanted bulbs. There is always a demand in the neighborhood, much more than for giant zucchini.

Text and photos excerpted from Tapestry Garden
© Copyright 2018 by Marietta and Ernie O’Byrne. Published
by Timber Press, Portland, OR. Used by permission of the publisher. All rights reserved.