Archive for the ‘Regional’ Category

Crape Myrtle Diseases And Pests

Not all crape myrtle cultivars are alike. Some are more susceptible to diseases and insect pests more than others. Overall, the U.S. National Arboretum (USNA) hybrid crapemyrtles are more disease and insect resistant, but not to all problems. Some cultivars are susceptible to aphids, usually in the spring. Their sugary excretions over leaves and stems […]

Disease Resistant Crape Myrtle Cultivars

‘Apalachee’ crape myrtle trunk Hybrid crape myrtles (Lagerstroemia indica x L. faurei) are popular landscape trees in the southeast and along the coastal areas of the U. S. Over the past decade plant pathologists in Louisiana (Louisiana State University), Alabama (Auburn University), South Carolina (Clemson University), and Georgia (University of Georgia) have tested the disease […]

Become Immersed In Swamp Hibiscus

Swamp mallow, aka swamp hibiscus (Hibiscus coccineus) is native to marshes and swamps in South Carolina, Georgia, Alabama, and Florida (USDA hardiness Zones 6 to 9). Vibrant red flowers cover the tall 4–8-foot plant(s) from June through September. Space plants 3 feet wide apart. Deeply cut maple-like foliage presents a lush tropical look and the […]

Mimosa Tree- Love It or Weed It

Mimosa (Albizia julibrissin) is essentially a 4-5 month ornamental tree indigenous from Iran to China (USDA hardiness zones 6-9). From late spring through summer, mimosa struts an attractive fine textured foliage and beautiful flowering. This small tree rarely leafs out until mid-May (in zone 6) and offers little in autumnal leaf color. Two seedling forms, […]

Caveats Before Planting Planetrees (Sycamores)

American sycamore, aka planetree, (Platanus occidentalis) is a native tree planted over a large area of the United States (USDA hardiness zones 4-9). Its enormous size, often 70-90 feet in height, limits it to planting mostly on large landscapes such as parks, golf courses, and industrial parks. Northern U.S. cities have planted it extensively along […]

Lovely Tall Stewartia Deserves Your Attention

Not enough gardeners know about stewartias (Stewartia spp.). Six species are found under cultivation, 2 native to the U.S. and 4 of Asian origin. One of the rarest seen in U.S. gardens is tall stewartia (S. monadelpha) (USDA hardiness zones 5-8). Tall stewartia is a more site forgiving than Japanese stewartia (S. pseudocamellia), the most […]

Gladiolas Are Wonderful Cutflowers

Across most regions of the U.S., planting gladiola corms (they’re not really “bulbs”) begins a week before the probable frost-free date has passed in the spring. Stagger individual plantings every 2-3 weeks through mid- July. Many people opt to grow them as cutflowers for their homes. Purchase large or premium sized corms that measure 1 […]

Expect Garden Visits From Pipevine Swallowtail

Pipevine Swallowtail (Battus philenor) is a beautiful butterfly common over a large geographic area of North and Central America. Pipevine swallowtail can be sighted in open meadows, parks, along streams, and hopefully in your garden. The butterfly larvae (caterpillars) feed on plant members of the pipevine family (Aristolochiaceae), particularly Dutchman’s pipevine (Aristolochia spp.), including Virginia […]

‘Going Bananas’ Daylily Blooms Continuously

‘Going Bananas’ is an extended-blooming daylily. This diploid cultivar flowers a three month long continuous blooming cycle (rather than stopping and starting again) from early summer into fall. Each bloom stays open longer, at least 16 hours per day. Each trumpet-shaped flower opens wider, a new genetic trait in daylilies. Going Bananas features slightly fragrant, […]

‘Stella D’Oro’- First And Last Daylily To Bloom

For over a quarter of a century, wherever daylilies (Hemerocallus spp.) grow, you will find the very popular gold-flowered ‘Stella d’Oro’ daylily (USDA hardiness zones 2-9). It’s one of a few daylilies that blooms 3 out of 4 seasons. Its small size makes it an ideal choice as a ground cover. This short clump growing […]