Archive for the ‘Pests’ Category

‘Fireworks’ Pennisetum

Fountain grasses are popular annual grasses that thrive in Southern Appalachian gardens (USDA zones 6 and 7). The new cultivar ‘Fireworks’ is totally spectacular. The mid-vein of the grass blade is burgundy red and edged in hot pink. Fireworks displays three seasons of awesome foliage color before dying off in the fall. Red plume foxtail flowers bloom […]

Fountain Grasses Are Summer Sizzlers

Purple Pennisetum Grass in Hot Parking Lot Fountain grass (Pennisetum setaceum ) is a warm season grass native to Northern Africa (USDA zones 8-10). It is a dense clump-forming grass with several topnotch cultivars. Most popular are purple fountain grasses (varieties ‘Purpureum’ and ‘Rubrum’) for their heat resistant dark reddish purple foliage. The pink to […]

Turk’s Cap Lily for Your Summer Enjoyment

  Turk’s cap lily (Lilium superbum) is native perennial started from bulbs. The strong single stem grows up to 6 feet tall. Leaves generally form in whorls of 3-9 along the stem. The lanceolate leaves are individually upwards of 7 inches longand 1 inch wide, and rather stiff to the touch. Upwards of 1-12 flowers nod downward from 4-8″ […]

Powis Castle Artemisia Is Exceptional

Most artemisias (aka “wormwood”) can not cope with the summer heat and humidity in the mid-South. Their silvery foliage tends to burn out (some say “melt out”) in mid to late summer. ‘Powis Castle’ artemisia is truly the exception. Powis Castle is likely a hybrid (Artemisia arborescens x A. absinthium Powis Castle is a bushy, woody-based perennial […]

Efforts To Solve Japanese Barberry Invasive Problem

Japanese barberry (Berberis thunbergii) is a very popular landscape shrub. Japanese barberry is indigenous to Eastern Europe and Asia and is commonly planted in USDA hardiness zones 4-8. There is justified concern over the invasive nature of Japanese barberry. A number of states have declared most barberry species (Berberis spp.) to be invasive and have […]

Volcano Mulching Harmful

Piling up mulch around trees or shrubs, called “volcano mulching”, is a bad practice and is killing them. Perhaps you’ve seen a neighbor or a professional landscaper doing it, and assumed that it must be alright. It’s not! The deep mulch pile smothers the natural buttress flair of the trunk which breathes and absorbs air for […]

Trifoliate Orange –The Barbed Wire of the Plant World

Trifoliate orange (Poncirus trifoliata) is a hardy citrus native to China. T-orange is hardy to -15° F. This strong growing large shrub or small tree can reach 15 to 20 feet in height. Its foliage is deciduous and compound, compared to citrus trees with single simple evergreen leaves. T-orange prefers full day or partial (minimum of 6 hours) […]

‘Duet’ – A New Variegated Beautyberry That Is Stable

                  ‘Duet’ is a variegated leaf cultivar of white fruited Japanese beautyberry (Callicarpa dichotoma ‘Albifructus’). It was discov­ered at Tennessee Technological University in 2000 by Dr. Gary Bach­man and Mr. W. Edgar Davis. ‘Duet’ beautyberry was released jointly by the U.S. National Arboretum and Tennessee Technological University. […]

Plant Autumn Asters Instead Of Mums

  Aromatic asters (Aster oblongifolius) is one of our finest late blooming native asters for the autumn garden in the Southern Appalachian region (USDA zones 6 and 7). Through the spring and summer months, the dense gray-green shrubby foliage mounds grow 15-18 inches high and 24-30 inches wide. Hundreds of yellow-centered, daisy type flowers cover the […]

‘Autumn Bride’ Started A Heuchera Evolution

Autumn Bride heuchera (Heuchera villosa ‘Autumn Bride’) is blooming now. This native ground cover, aka “hairy alumroot”, displays wide lime-green foliage which is not as colorful as many new H. villosa  hybrids introduced in recent years. However, the white flowers on Autumn Bride are showier and more numerous. Heucheras prefer a moist, well-drained, compost-rich soil. Plants are heat and humidity […]