Old fashioned gardenias or cape jasmines (Gardenia jasminoides) are reliably hardy in USDA zones 7-b and 8. Plants require immediate protection when the outdoor temperatures dip below 15 to 20 degrees. The new hardier cultivars are compact growers, 2-4 feet tall and 3-4 feet wide. ‘Frost Proof’, Crown Jewel™, and Heaven Scent™ are three promising […]
Archive for the ‘Spring flowering’ Category
Catalpa Both Loved And Hated
Northern catalpa or Indian cigar tree (Catalpa speciosa) has enormous presence in any landscape setting (USDA hardiness zones 4-8). Finding a 70 – 80 foot tree with a massive trunk and thick sinuous limbs is not unusual from Ohio south thru Tennessee. In summer its huge heart –shaped, pale green leaves may be easily reach […]
Growing Blueberries
Both the highbush and rabbiteye blueberry (Vaccinium spp.) are hardy in the Southern Appalachian region (zone 6-b to 7-a). A hot summer is a nemesis for highbush and an extremely cold winter limits where you can grow rabbiteye within zone 6-b. Blueberry bushes grow 8-15-feet tall, requiring annual pruning. Its dark green foliage turns brilliant […]
U.S. Native Viburnums And Viburnum Beetle Susceptibility
photo -Arrowwood viburnum in late summer A trip to Carolina Native Plants Nursery in Burnsville, NC gave me this idea to list those viburnums which are U.S. natives (USDA Hardiness zones 6 and 7). All are worthy for planting in your landscape in full sun except where noted. All attract birds and other wildlife to […]
Big Begonias
The Benary ‘Big Begonia’ series are a hit, “begonias on steroids”, some gardeners may say. Individual flowers are twice that of other bedding begonias. Colors are vivid with three cultivars currently available . ‘Big Rose Bronze Leaf’ is my personal favorite. (pictured) Begonias grow best in well drained, humus-rich garden soil. Provide tender -loving care […]
Keep Your Pansy Faces Smiling
Success in blooming pansies and violas in the winter season depends on two key factors: date of fall planting and soil nutrition. If you live in USDA plant zone 6, pansies must be planted on or before October 15th, two weeks earlier in northerly zone 5, or two weeks later in zone 7. Early fall planting […]
Baptisia – 2010 Perennial Plant of the Year
Blue false indigo(Baptisia australis) is a beautiful, long-lived, drought tolerant perennial with a robust growth habit and attractive steel blue foliage. In late May, the violet-blue flower spikes rise tall above sturdy 3-4 feet tall plants with steel bluish-green foliage. Baptisias grow best in full sun and in moist, well-drained soils. Feed or fertilize baptisias sparingly to prevent plants from flopping […]
Dogwoods for Spring
Five disease resistant varieties of flowering dogwood (Cornus florida), released by the University of Tennessee in Knoxville, are available at local garden centers this spring. Supply should be better than in past years. Powdery mildew resistant varieties: ‘Appalachian Snow’ (pictured), ‘Appalachian Blush’ and ‘Appalachian Mist’. In addition, ‘Cherokee Brave’, with dark pink flowers, exhibits good mildew resistance. […]
Growing Hardy Camellias
Growing camellias in Tennessee is no longer a dream. Through the efforts of several plant breeders, particularly Dr. William L. Ackerman of the U.S. National Arboretum (retired) and Dr. Clifford Parks of Camellia Forest Nursery, as many as 40 cultivars of winter hardy camellias to -15 °F are now available in nursery commerce. Flower colors […]

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