Fall came quickly here as our extreme climate did a number on my vegetable garden and I am mourning the loss of fresh tomatoes and cucumbers. So to pick up my mood, I’m enjoying the color that remains on many of our drought-tolerant ornamentals. Some of the native roses and wildflowers are hanging in there. Although I love fall, the time of transition is always tough for me, and it helps to have some green and lots of other color hold on longer as cool temperatures make their way into New Mexico.
Aside from those hardy native wildflowers, here are five low-water plants that can prolong color power in xeric landscapes:
Beargrass. Beargrass is a woody succulent from Mexico that resembles an ornamental grass in the garden. Although plants in California and the Pacific Northwest also are called Beargrass, the ones that thrive in Mexico and New Mexico are of the Nolina family and typically are hardy down to zone 5. High Country Gardens has just introduced a new cold hardy species Nolina microcarpa, or Big Beargrass. Not only is the foliage evergreen, but as the creamy flowers fade in late summer, they turn an earthy pink. The plant attracts pollinators and reaches up to 2.5 feet in height.
Firestick Euphorbia or “Sticks of Fire.” The Euphorbia tirucalli “Rosea” is a succulent usually grown as a houseplant, at least in any climate colder than zone 9. In warmer zones, the plant makes a stunning accent in a xeric rock garden. If you grow it as a container plant, you can add it to your summer and fall landscape by setting the pot out until the temperature hovers near freezing. The Fire Sticks plant is native to South Africa and grows well in Arizona and warmer zones of California and a few warm spots in southern New Mexico. The red color comes on as temperatures cool. If you do choose to plant Fire Sticks in a container, be aware that the plant can reach heights of 6 feet.
Nandina. Also called Heavenly Bamboo, Nandina is a favorite evergreen shrub around the country. Although it grows in part shade to full sun, the more sun you give nandinas, the more color you’re likely to see. Most nandina are evergreen and grow slowly, up to 10 feet high under some conditions, but compact varieties are available for nearly every zone. In the arid Southwest, nandinas tend to grow and spread less. Sunset has just added a compact variety called “Lemon lime” (Nandina domestica Alba) to its Western Garden collection. Hardy in USDA zones 6 through 9, this stunner has bright lime green new foliage that fades slightly but remains green.
Woods’ rose. It’s wild, but I love it. The Rosa woodsii is a rose hip-producing machine fills with delicate pink blooms in summer that somehow seem to leave even more hips than spent blooms from fall through winter. It’s as bright as any berry bush and a haven for birds, pollinators and wildlife. Of course, you can harvest the rose hips or leave them for the color and critters; the hips provide an excellent source of protein and energy in the winter. There are several native varieties of the Woods’ rose that can adapt to climate and natural water availability.
Sedum. Sedum, or stonecrop, is a versatile group of evergreen succulents. Most of them are even more attractive in fall and winter when they darken or produce seed heads. One variety, Autumn Joy, is even named for its favored fall color. The flowers emerge in summer as a lovely pink color, but gradually turn a deep rust. Autumn Fire is a new variety of Autumn Joy with light green leaves and deeper red fall flowers. Both the foliage and flowers provide unique fall and winter interest in the garden on this xeric perennial. It comes in various heights and colors.