Ice plants (Delosperma spp.) are perennial evergreen succulents from South Africa. Two species are most popular in U.S. gardens starting with hardy ice plant (D. cooperi) (zones 6b – 9) and yellow ice plant (D. nubigenum) (zone 4 – 10). There are also many hybrid cultivars sold at garden centers and on-line. North of zone […]
Archive for the ‘acidic soil’ Category
Less Invasive Butterfly Bush Identified
Butterfly bush (Buddleia) is a popular garden shrub in many areas of the U.S. Buddleia invasiveness is a serious issue in the Pacific Northwest. The Oregon Dept of Agriculture, Plant Division, has approved for sale these buddleia cultivars in the state. The approved varieties produce 2% or less viable seed, meeting Oregon’s standards for sterility. The […]
Panicle Hydrangeas For Small Gardens And Containers
Panicle, PeeGee or PG hydrangeas (Hydrangea panculata) brighten up your July-August garden. They hail from China and Japan and grow almost anywhere in the U.S. (USDA hardiness zones 3 – 8). PG hydrangeas are far more reliable in northern areas (zones 3-5), than mophead hydrangeas (H. macrophylla). They flower at their best in full to partial day sunlight (6 hours […]
Sorting Through The Joe Pye Cultivars
Joe Pye weed (Eutrichum purpureum) is a native perennial commonly spotted onthe edge of farm fields in the eastern and northern U.S. (USDA hardiness zones 4 to 9). The wild species grows 5-7 feet high and 2-4 feet wide. It blooms from late July to September and is a magnet to attract bees and butterflies. Over the past two […]
Fall In Love With Haas’ Halo® Hydrangea
Anyone walking through your garden will stop to see Haas Halo®) hydrangea (Hydrangea arborescens Haas Halo®). This native smooth hydrangea has intense blue-green, leathery foliage and huge pure white wide lace cap blooms (USDA hardiness zones 3-9). Flowers stand tall on stout sturdy stems. Shrub branching is upright. This new hydrangea was found by Frederick H. Ray, […]
Spring – Summer Care of Herbaceous Peonies After Flowering
Summer weather can be tough on the foliage of tree and herbaceous peonies tree (P. lactiflora). Here are some tips to ensure your peony plants will prosper for many years to come. Keep foliage disease-free and prune off all badly infected with mildew or black spotted. Some varieties naturally shed their leaves (go dormant) early. Itoh hybrids and most […]
Five Perennial Staples For Your Summer Garden
If you are designing a new perennial garden, here are five proven perennials to start out with. All varieties are standout garden performers known for their long blooming period and showy flowers. Coreopsis and veronica are often utilized for edging along a sunny border. All can be planted in mixed containers. ‘Pow Wow Wild Berry’ coneflower (Echinacea […]
Five Reliable Summer – Early Fall Flowering Perennials
Planning a new perennial garden this summer?Include these five very dependable flowering perennials. All are low maintenance and are U.S. natives (USDA Zones 4–8). ‘Zagreb’ (Coreopsis verticillata) has a very uniform plant habit and finely dissected foliage. Plant grows only about 20 -24 inches tall, and is blanketed with bright yellow (gold) flowers coupled with […]
Act Quickly Against Eastern Filbert Blight
European Hazelnut (Corylus avellana) is highly prized both for its edible nuts and as a landscape shrub/small tree. Unfortunately, it is susceptible to eastern filbert blight (EFB). American hazelnut (C. americana) is relatively resistant. EFB is a lethal disease as it may kill a large shrub in 4-5 years. The fungus was discovered in the Pacific […]
Chinese Fringetree Is Versatile Landscape Tree
Chinese fringetree (Chionanthus retusus) is native to China, Korea and Japan (Zone: 6 to 9a). Related to native U.S. species (C. virginicus), fringetrees are noted for their profuse spring bloom of fragrant white flowers. It is most often seen in cultivation as a large, multi-stemmed, deciduous shrub growing to 15 – 20 feet tall with a […]