Archive for the ‘Trees & Shrubs’ Category

‘Tamukeyama’ Japanese Maple One Of The Best

Tamukeyama Japanese maple (Acer palmatum ‘Tamukeyama’) is a long-lived botanical treasure (USDA hardiness zones 5-8). Tamukeyama is a short 6-8 feet tall multi-stemmed deciduous tree. It grows slightly taller and its foliage tolerates hot summer sun better than ‘Crimson Queen’. Tamukeyama grows best in full sun to partial shade. It prefers moist well-drained soil and […]

Swamp White Oak Gaining In Popularity

Swamp white oak (Quercus bicolor) is an underutilized large native oak whose ornamental attributes have captured the attention of municipal arborists (and perhaps you as well). (USDA hardiness zones 4 to 8). Swamp white oak is a medium to large sized deciduous shade tree, 50 to 60 feet tall and wide, and a broad, irregularly […]

English Oak Demands A Moist Well-drained Soil

Thinking about English oak (Quercus robur) brings to mind Robin Hood and Sherwood Forest. This majestic oak forms a broad spreading crown supported by a short sturdy trunk with a medium-brown, deeply-fissured bark (USDA hardiness zones 4-8). A young tree exhibits a pyramidal form. In a city park or golf course, it typically grows 50-70 […]

Mexican Sunflowers Thrive In A Hot Summer

Mexican sunflower (Tithonia rotundiloba) is a fast growing annual that produces vivid orange-red zinnia-like flowers from early summer to autumn frost. It is native to Mexico and Central America. Dark green leaves remain blemish-free all summer long. Snails and slugs are occasional pests during wet summers or when irrigated overhead. Plants grow 3-4 feet tall […]

Avoiding Crape Myrtle Hardiness Problems

Late summer (September 1st) is your deadline to plant crape myrtles (Lagerstroemia spp.) in USDA hardiness zone 6. Your primary objective should be to grow deep plant roots. Crape myrtles are classified as perennials in northerly areas of zone 6. In many years their woody branches die back after a cruel cold winter. The hardy […]

Exclamation™ London Plane Tree Is A Game-Changer

Exclamation! London Plane Tree (Platanus x acerifolia Exclamation!™) is probably one the most improved cultivars to date (USDA hardiness zones 4-8). Exclamation! was introduced by Dr. George Ware at the Morton Arboretum and released through the Chicagoland Grows® program. Exclamation! develops a strong central leader, a uniform upright pyramidal shape (when young), a vigorous growth […]

Plumleaf Azalea – Late July Flowering Shrub

Plumleaf azalea (Rhododendron prunifolium) is a native deciduous azaleas that indigenous to the Chattahoochee River Valley on the Georgia-Alabama line (USDA hardiness zones 6-9). The bright orange-red blooms surprise in late July to early August. Compared to many of the spring blooming species, flowers are not fragrant. Fall leaf color is uneventful. This 5-8 feet […]

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 […]

Designing With Crape Myrtle

Undeniably, crape myrtles (Lagerstroemia indica x L. faurei ) thrive in the southern U.S. (USDA hardiness zones 6-9). You see them planted on practically every street. Their showy summer flowers are spectacular. Many cultivars exhibit colorful autumn foliage, and their smooth patterned trunks and architecture grace the winter landscape. “The right crape myrtle for the […]