Rhododendrons (Rhododendron catawbiense) were born in the cool of the North Carolina and Tennessee mountains. Hundreds of lovely hybrids have been bred by dedicated plantsmen. Winter hardiness is rarely an issue, but rhododendrons are challenged by summer heat and disease problems in the Southern Appalachian region (USDA hardiness zones 6 and 7). Your most important decision is […]
Archive for the ‘Rhododendrons’ Category
The Right Rhododendron for the Right Location
Posted by Hugh on March 2nd, 2012
Posted in acidic soil, acidify soil, compost, Disease prone, Disease resistant, Fertilizing plants, Flowers, plant nutrition, Rhododendrons, root injury, Southern Appalachian Region, Spring flowering, Summer heat tolerant, Trees & Shrubs, watering tips, winter hardiness, winter injury 
Comments Off on The Right Rhododendron for the Right LocationSoil Testing Is Fool-Proof Garden Insurance
Posted by Hugh on January 18th, 2012
Soil testing is a gardener’s best low cost insurance for enjoying a gorgeous garden or lawn. A soil analysis may be a problem solver, informing you of the soil nutrient content and pH. It accurately calculates how much chemical fertilizer, limestone, manure and other components to add. You save money is your soil is already rich enough or […]
Posted in acidic soil, alkaline soil, Azaleas (evergreen), Blueberries, Fertilizing plants, lenten rose, organic gardening, plant nutrition, Rhododendrons, Southern Appalachian Region, Uncategorized Comments Off on Soil Testing Is Fool-Proof Garden InsuranceWhat Can Be Done About Phytophthora
Posted by Hugh on January 10th, 2012
Phytophthora disease (Phytophthora spp.) is the fatal cause of root rots, stem cankers and crown rots. Several hundred species of plants are susceptible, including redbuds, dogwoods, rhododendrons, camellias, white pines, firs, yews (Taxus spp.), and fruit trees. It thrives in warm moist saturated soils. Phytophthora may lie dormant in the soil for several years, waiting for a […]
Posted in Azalea (deciduous), Azaleas (evergreen), Camellia, Disease prone, Disease resistant, Dogwood (Cornus), Evergreen, Fertilizing plants, mulching, mulching trees, Pines (Pinus spp.), plant nutrition, Planting tips, Redbud, Rhododendrons, root injury, Southern Appalachian Region, Trees & Shrubs, Uncategorized, watering tips Comments Off on What Can Be Done About PhytophthoraIrrigate Evergreens This Winter
Posted by Hugh on October 28th, 2011
Fall slowdown in the garden brings many of us back indoors to prepare for the winter holidays ahead. A number of serious canker diseases attack evergreens in the fall and winter if soil moisture is not plentiful. These diseases include botryosphaeria, cytospora, phomopsis, and seiridium cankers. Each organism is capable of causing branch dieback or […]
Posted in Arborvitae (Thuja spp.), Christmas trees, Disease prone, Drought tolerant, DWARF CONIFERS, Evergreen, Evergreens, Leyland cypress, Pines (Pinus spp.), Rhododendrons, Southern Appalachian Region, Spruces (Picea spp.), Thujopsis, Trees & Shrubs, watering evergreens, watering tips, winter injury, Winter Protection 1 Comment »Biltmore Estate and Gardens
Posted by Hugh on June 30th, 2011
I have visited the Biltmore Estate on several occasions, but my May visit this year was special. I had the opportunity to interview Parker Andes, Biltmore’s Director of Horticulture, and Bill Alexander, Landscape and Forest Historian. Few properties match the overall grandeur of Biltmore Estate and Gardens in Asheville, North Carolina. Biltmore is a historical perspective of America over […]
Posted in Azalea (deciduous), Azaleas (evergreen), Evergreens, Gardens to Visit, Mountain laurel (Kalmia), Peonies, Perennials, Rhododendrons, Roses, Southern Appalachian Region, Trees & Shrubs Comments Off on Biltmore Estate and GardensRosebay Rhododendron for Cool Shady Landscapes
Posted by Hugh on June 24th, 2011
Rosebay Rhododendron (Rhododendron maximum) grows in dense woodland shade along cool mountain streams and on moist, rocky slopes. This Southern Appalachian native is extremely winter hardy to -15° to -20° F. It is a late-season bloomer reaching its peak around late June. Rosebay grows large, 15 to 20 feet in height. On some sites it […]
Posted in acidic soil, acidify soil, Attracting birds, compost, mulching, Rhododendrons, Shade Gardening, Southern Appalachian Region, Summer flowering, watering evergreens Comments Off on Rosebay Rhododendron for Cool Shady Landscapes‘Janet Blair’ Rhododendron
Posted by Hugh on May 13th, 2011
Here in the Southern Appalachian region (USDA zones 6 and 7) rhododendrons can be challenging. Of critical importance is to choose a good garden spot and to plant a hardy cultivar. Over the past 25 years ‘Janet Blair’ has been one of the most reliable varieties in my Northeast Tennessee garden. ‘Janet Blair’ bears medium-sized […]
Posted in acidic soil, compost, deadheading, mulching, plant nutrition, Rhododendrons, Southern Appalachian Region, Summer heat tolerant, Trees & Shrubs, Uncategorized, water garden maintenance, winter hardiness, Winter Protection Comments Off on ‘Janet Blair’ RhododendronCoppicing – Renewal Pruning for Old Rhododendrons
Posted by Hugh on September 14th, 2010
Coppicing is a form of renewal pruning because the entire shrub is lopped off to the ground. It is a drastic pruning technique primarily used on shrubs that flower and fruit on new or summer wood, those that flower in late June or later. Coppicing is renewal pruning but is so simple that gardeners is […]
Posted in Aggressive grower, Garden Maintenance, Ilex (hollies), Mountain laurel (Kalmia), Pieris japonica, Pruning, Rhododendrons, Southern Appalachian Region Comments Off on Coppicing – Renewal Pruning for Old Rhododendrons
