Gardeners no longer have to give up growing garden impatiens (Impatiens walleriana). No, the worldwide disease outbreak of downy mildew on garden impatiens is not over. But new disease resistant cultivars of impatiens are arriving at garden centers this spring. Two of the newest are: SunPatiens® Spreading Shell Pink and Bounce® Pink Flame (‘Balboufink’). […]
Archive for the ‘winter hardiness’ Category
American Fringetree – A Spring Flowering Treasure
American fringetree (Chionanthus virginicus) is one of the finest spring flowering trees (USDA hardiness zones 4-9). Individual flower heads are large and billowy, snowy white, and very fragrant in the early evening hours. Flower panicles peak through the large leaves, and are large and showy compared to Chinese fringetree (which I also like). Leaf sizes […]
Many New Beebalm Cultivars Continue to Roll Out
Bee balms, aka bergamots or Oswego tea (Monarda spp.) are native to eastern North America (USDA hardiness zones 4-9). Plants are easy to grow, bloom beautifully, and multiply rapidly. They are treasured for their raging colored flowers and medicinal properties. Numerous bee pollinators as well as butterflies and hummingbirds favor the summer blooms. The native […]
Wonderful Bellworts For Woodland Gardens
The soft yellow bell-shaped flowers of bellworts (Uvularia spp.), aka merrybells, contribute to spring’s awakening in U.S. woodlands and shade gardens (USDA hardiness zones 3-9). On both U. grandiflora and U. perfoliata, flower stems pierce (pass through) the center of the leaves. A third species, (U. sessilifolia), nicknamed Wild Oats, […]
Less Invasive Rose Of Sharons (Altheas)
In several states rose of Sharon or altheas (Hibiscus syriacus) are classified as exotic (non-native) invasive shrubs (USDA hardiness zones 5-8). Their seedlings are invading U.S. woodlands. Plant breeders are now developing less invasive cultivars. The double-flowered altheas produce far fewer fertile seeds; stamens and pollen sacs are mostly embedded within the flower petals. Azurri Blue Satin® is […]
‘Blizzard’ Pearlbush Is Superior Choice
Once upon a time pearlbush (Exochorda spp.) was a popular old-fashioned spring flowering shrub. Its flurry of white flowers followed forsythia in early spring bloom cycle (USDA hardiness zones 4 to 8, excel in 7 & 8). New on the garden scene is ‘Blizzard’ (E. x […]
The Forsythia Revolution
In most areas of the U.S., the golden yellow blossoms of forsythia (Forsythia x intermedia) signals that worst of winter weather is almost over (USDA hardiness zones 4 to 8). Over 2-3 weeks bright yellow flowers cover this easy to grow shrub. Priced at under $20, a good-sized forsythia […]
New Redbuds With Striking Foliage Abound
Over the past decade Eastern redbud (Cercis canadensis) has undergone a real facelift. This native spring flowering tree can no longer be solely identified by its green heart-shaped leaves. New foliage color choices will decidedly catch your eye and win you over. With some reservations most redbud cultivars fall within USDA hardiness zones 5-9. […]

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