Some needle loss on evergreens in the fall is natural. As night time temperatures cool, needles in the interior of many evergreen trees or shrubs regularly turn brown (or golden yellow) and drop off. Needle loss is most obvious on pines (Pinus spp.) and arborvitae (Thuja spp.) in the Southern Appalachian region (USDA zones 6 and 7). The […]
Archive for the ‘Heat Tolerance’ Category
Natural Evergreen Needle Drop in Autumn
Posted by Hugh on October 25th, 2011
Posted in Arborvitae (Thuja spp.), Drought tolerant, Fertilizing plants, Heat Tolerance, Pines (Pinus spp.), Southern Appalachian Region, Summer heat tolerant, Transplant problem, watering evergreens, winter injury 
Comments Off on Natural Evergreen Needle Drop in Autumn‘Duet’ – A New Variegated Beautyberry That Is Stable
Posted by Hugh on October 13th, 2011
‘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. […]
‘Slender Silhouette’ Sweetgum…Very Few Gumballs!
Posted by Hugh on September 4th, 2011
Sweetgum (Liquidambar styraciflua) is a medium to large landscape tree, which matures to 65-70 feet in height and 35 feet in spread. To many people it’s called the cursed “gumball” or “ankle twister” tree, not be confused with the fruit balls of the American sycamore or London plane tree (Platanus spp.). Gumball detractors should look […]
Posted in acidic soil, Disease resistant, Heat Tolerance, Native Plant, Soil drainage, Southern Appalachian Region, Sweetgum (Liquidambar), Trees & Shrubs, winter hardiness Comments Off on ‘Slender Silhouette’ Sweetgum…Very Few Gumballs!Gaillardia Survival Depends On Winter Soil Drainage
Posted by Hugh on August 29th, 2011
In recent years several hybrid cultivars of blanket flowers (Gaillardia x grandflora) have been introduced. Some are annuals and others perennials. This North American prairie native is hardy in USDA zone 5 hardy. Gaillardias should thrive in the Southern Appalachian region (USDA zones 6 and 7), but they don’t! Soggy winter clay soil is their […]
Posted in Blanket flower (Gaillardia), Butterflies, Disease resistant, Flowers, Heat Tolerance, Perennials, Soil drainage, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Uncategorized, watering tips Comments Off on Gaillardia Survival Depends On Winter Soil DrainageSunpatiens Worth The Hype
Posted by Hugh on August 26th, 2011
Sunpatiens™ live up to all their hype, with a caveat. They are still impatiens, which means they love (and can’t go without) water. In the Southern Appalachian region (USDA zones 6 and 7), Sunpatiens prosper in direct full day sun to part shade, but can’t go without weekly watering. The flower bed should be mulched […]
Posted in compost, Disease resistant, Fertilizing plants, Flowers, Heat Tolerance, mulching, Southern Appalachian Region, Spring flowering, Summer flowering, Summer heat tolerant, Sunpatiens, watering tips Comments Off on Sunpatiens Worth The HypeKousa Dogwood Not Summer Heat Tolerant
Posted by Hugh on August 23rd, 2011
Chinese (Kousa) dogwood (Cornus kousa) rates four stars (out of four) as a beautiful small flowering landscape tree. Since the 1970’s, a deadly anthracnose (Discula spp.) fungus disease has threatened to eradicate our native flowering dogwood (C. florida). Kousa dogwood rates as a highly disease resistant alternative. Its Achilees’ heel is its less than stellar foliar heat […]
Posted in Chinese (kousa) dogwood, Disease resistant, Heat Tolerance, Southern Appalachian Region, Spring flowering, Summer heat tolerant, Trees & Shrubs, watering tips Comments Off on Kousa Dogwood Not Summer Heat TolerantArkansas Bluestar Great In Spring, Summer and Fall
Posted by Hugh on October 27th, 2010
Blue star (Amsonia hubrichtii) exhibits one of nature’s finest autumn foliar displays. This Arkansas native is a long-lived perennial and prospers here in the Southern Appalachian region (USDA zones 6 and 7). After its initial year in the garden, amsonia exhibits good heat and drought tolerances. Its fine textured needle -like foliage is very soft and airy. In the […]
Posted in Disease resistant, Drought tolerant, Heat Tolerance, Perennials, Planting tips, Pruning, Spring flowering, watering tips Comments Off on Arkansas Bluestar Great In Spring, Summer and FallPlumleaf Azalea Is Showy Summer Blooming Shrub
Posted by Hugh on August 1st, 2010
Plumleaf azalea (Rhododendron prunifolium) has been blooming in my garden for the past ten days. This species is a late July – early August bloomer in northeast TN. The bright orange-red flowers of this native azalea light up any garden spot whether in full sun or partial shade. Provide some additional shade in southern climes […]
Posted in Azalea (deciduous), Deer resistant, Disease resistant, Drought tolerant, Heat Tolerance, Hummingbird, mulching, Native Plant, Pruning, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Trees & Shrubs Comments Off on Plumleaf Azalea Is Showy Summer Blooming ShrubCoreopsis ‘Route 66’ – A Riot of Color
Posted by Hugh on July 5th, 2010
Create a hot splash in your garden this summer. Threadleaf coreopsis (Coreopsis verticillata) ‘Route 66’ is a new selection by Itsaul Nursery in Atlanta, Georgia (USDA zone 4 to 9). Coreopsis ‘Route 66’ originated in Pennsylvania (zone 5). Perennial gardeners have been planting yellow- flowered ‘Moonbeam’ and ‘Zagreb’ cultivars for over a quarter of a […]
Posted in Coreopsis, deadheading, Heat Tolerance, Native Plant, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Uncategorized Comments Off on Coreopsis ‘Route 66’ – A Riot of ColorCulver’s Root (Veronicastrum)
Posted by Hugh on June 28th, 2010
Midwest native Culver’s root (Veronicastrum virginicum) starts the summer flowering season in my perennial garden. It naturally grows in open woods and meadows and thrives in fertile to moist soils. However, this deep rooted plant hasn’t complain about the current dry period in the Southern Appalachian region (USDA zones 6-7). Be aware that culver’s root […]
Posted in acidic soil, Aggressive grower, alkaline soil, Attracting Butterflies, Bee Favorite, Bees and other pollinators, Beneficial insects, Butterflies, Culver's Root (veronicastrum), deadheading, Drought tolerant, Fertilizing plants, Goldenrod (Solidago), Heat Tolerance, mulching, Native Plant, Perennials, Planting tips, Propagation (Cuttings), Propagation (dividing), Soil drainage, Southern Appalachian Region, Summer flowering, Summer heat tolerant, watering tips, winter hardiness Comments Off on Culver’s Root (Veronicastrum)
