by David Salman
I have to admit that when it comes to gardening, I’m a sun lover and many of my favorite plants are for sunny planting sites. But I live and garden in the high desert of northern New Mexico, where shade is a scarce community. Yet even in Santa Fe, the oldest parts of town have mature trees and the yards there are more shade than sun. This is the case in much of the western U.S. as well.
The Challenge of Shade
There are several types of shady planting sites. And the difference is important in the plants we choose. The most challenging shade is under shallow rooted shade trees and tall conifers (evergreen trees). Not only are their roots highly competitive with any plants placed under them, but this ground is in permanent drought because the tree canopies absorb much of the rain and snow that falls on them. So the plants placed here need to be both vigorous and xeric (drought tolerant).
Other parts of the yard have shade from overhead branches and buildings. The north sides of buildings and fences are often quite shady, especially if the buildings are two stories tall. But the root competition is often not as severe as directly under tall trees and large shrubs. So our plant choices are expanded.
The Graceful Beauty of Columbine
For parts of the yard not directly under the large trees, Columbine (Aquilegia) is one of our very best perennial general for shade. They also appreciate more moisture, so the north sides of fences and buildings are especially to their liking. Columbine are also a favorite of hummingbirds, with their sweeping spurs a source of ample nectar for our winged jewels.
The most famous columbine is Aquilegia caerulea, the Rocky Mountain columbine. It’s the state flower of Colorado, but is widespread across the higher elevation spine of the Intermountain West. This blue and white beauty is not for every yard as R.M. columbine requires the cool to cold nights and modest day temperatures, characteristic of elevations over about 5,000 ft. Although I strongly suspect it will thrive in higher elevations of the Great Smoky Mountains and eastern mountains of New York and adjacent states.
My other favorite columbines include:
- Arizona Columbine (Aquilegia desertorum) – a long blooming species with cheerful orange and yellow flowers. Native to the mid-elevations of Arizona it is tolerant to more sun and drier conditions than most.
- Golden Columbine (Aquilegia chrysantha) – long blooming, especially if deadheaded in July. Sun or shade is fine.
- Dwarf Golden Spur Columbine (Aquilegia chrysantha v. chaplinei ‘Little Treasure’) – a dwarf treasure originally collected from a shady, moist canyon in south-central New Mexico. After about 5 years of breeding work, I created a uniformly smaller plant. In bloom, it looks like a nest of baby birds with their beaks in the air.
- Swallowtail Columbine (Aquilegia sp. Swallowtail®) – an exceeding rare plant in nature, originally collected from a hidden canyon in southern Arizona just north of the Mexican border. The flowers are large and stunning with trailing spurs up to 4” in length. Fantastic blue foliage! Heat tolerant too.
- Little Lanterns Eastern Columbine (Aquilegia Canadensis) – a cheerful, small growing, long blooming cultivar of the species from the eastern U.S.
- Dwarf Japanese Columbine (Aquilegia flabellate v.nana) – a stunning dwarf species from Japan, this is a favorite of rock gardeners. It’s also perfect along the edges of shady paths. Huge cuteness factor!
You’ll notice that we specialize in un-hybridized columbine. Columbine as individual plants are not long lived; three to four years would be typical. But Aquilegia are colonizers, re-seeding themselves to create long-lived colonies. While hybrid columbine give the garden a wonderful blast of color, they will re-seed themselves into a colony of muddy yellow flowers. By planting species or stabilized hybrids (come true from seed) unmixed with other species, you’ll create a true seeding colony of colorful bloomers. Where possible, try and separate your columbines apart in distant parts of your yard to minimize cross pollination. Or go ahead and mix the species and simply re-plant every few years.
Hardy Plumbago (Ceratostigma plumbaginoides) a remarkable groundcover. It is an exceptional choice for shady areas, especially under trees and shrubs. It also grows in part and full ...Learn MoreHardy Plumbago (Ceratostigma) Hardy Plumbago, Leadwort Ceratostigma plumbaginoidesAs low as $9.99Per Plant - 2.5" PotHardy Plumbago (Ceratostigma plumbaginoides) a remarkable groundcover. It is an exceptional choice for shady areas, especially under trees and shrubs. It also grows in part and full sun, and thrives in most soils, including clay, testaments to the plant’s versatility as a long-lived piece of the garden fabric. Gardens all over the country can enjoy the profuse display of true blue flowers followed by striking burgundy-red fall foliage.
2001 Plant Select Winner 4-6„ tall x 15-18„ wide. Orange Carpet® is a vigorous perennial groundcover that blooms in mid- to late summer with a profusion of bright ora...Learn MoreOrange Carpet® Creeping Hummingbird Trumpet (Zauschneria) Creeping Hummingbird Trumpet Orange Carpet® (Fire Chalice) Zauschneria garrettii Orange Carpet®$12.99Per Plant - 5" Deep Pot2001 Plant Select Winner 4-6" tall x 15-18" wide. Orange Carpet® is a vigorous perennial groundcover that blooms in mid- to late summer with a profusion of bright orange trumpet shaped flowers. Spreading with underground stems, this beauty is perfect for slopes and cascading over the edges of raised beds.
White Nancy is an outstanding Old World groundcover for shade and semi-shade. Blooming much of the summer with bright white flower helod over green and white variegated foliage, this...Learn MoreWhite Nancy Lamium White Nancy Deadnettle Lamium maculatum White NancyAs low as $8.99Per Plant - 2.5" PotWhite Nancy is an outstanding Old World groundcover for shade and semi-shade. Blooming much of the summer with bright white flower helod over green and white variegated foliage, this long lived groundcover is the best.
30-36„ tall x 18„ wide. Golden Spur columbine yellow blooms for months beginning in late spring with a profusion of large, cheerful yellow flowers that attract hummingbir...Learn MoreGolden Spur Columbine Golden Spur Columbine Aquilegia chrysantha$11.99Per Plant - 5" Deep Pot30-36" tall x 18" wide. Golden Spur columbine yellow blooms for months beginning in late spring with a profusion of large, cheerful yellow flowers that attract hummingbirds. Allow the plant to reseed itself to form colorful long lived colonies. (seed propagated).