Perennials
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C 576
Dahlias
Dahlias are among the most spectacular flowers you can grow in your garden. Hundreds of varieties are available, with flower sizes ranging from 1 to 14 inches in diameter. Almost any color except true
blue can be produced in Georgia. In exchange for their beauty, dahlias require dedicated care. Most of them need special soil preparation, staking, watering during dry periods, disbudding and a
strict insect control program. This publication contains information about successfully growing dahlias in Georgia.|
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C 1260
Azalea Bark Scale
Azalea bark scale (ABS) poses a serious threat to azaleas, rhododendron, and Pieris (Andromedas) in Georgia. ABS is a soft scale insect; the nymph and female soft scales secrete a protective coating of waxy crust on their body that cannot be separated from the scale insect. ABS also is found on blueberry, hawthorn, huckleberry, poplar, and
willow. ABS is found in cracks or crevices in the surface of the bark, and also in areas where azalea branches fork. ABS can undergo two generations per year in Georgia.
Symptoms of ABS infestation include dropping yellow leaves and dying branches. Developing nymphs and females excrete a sugary syruplike liquid called honeydew on to the bark and leaves. As time passes, the surface of the bark, and sometimes the leaves, turns black because it gets infested with a sooty mold fungus that
feeds on the sugary secretions. The white crusts of scale insects are easily visible when the azalea bark turns completely black. An ABS infestation rarely kills the plant unless it is extremely severe and uncontrolled.|
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Ornamental plantings can be attractive and beneficial options for the expanse of open ground designated for a septic drainfield. Properly chosen plants help manage moisture and nutrient levels in the soils around the drainfield, and can discourage activities that may cause site compaction and reduce the effectiveness of the system. The drawback is that poor plant choices can create costly maintenance issues, and any septic drainfield repair work could disturb planting areas that you value. By following a few simple guidelines, planting in these areas can be both pretty and practical.
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This circular discusses the most common ground covers, both native and non-native plants, that are suitable for culture in North Georgia landscapes in shaded areas.
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C 955
Growing Hostas
Hostas are quickly becoming one of the most popular perennial plants grown in our landscapes. Sometimes referred to as plantain lilies, hostas are reliable plants for both shade and partial sun situations. This publication includes variety recommendations.
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Whether in a commercial installation or residential garden, perennial plants can be successfully
used to offer more landscaping choices, distinguish your firm from the competition and create a niche for your landscape business. Perennial plants are complex, and it is best to contract or hire a professional landscape architect for the design phase and train knowledgeable staff in proper maintenance later on. This publication is intended to provide the basics of perennial plant biology, ideas on design and installation, and information on cultivation and maintenance of perennial beds. It should also serve as a quick guide for the most common and recommended perennials for Georgia. Common-sense tips from a professional landscaper’s perspective are also included.|
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C 1240
Repotting Basics
This publication describes the reasoning behind repotting, as well as container selection, drainage, positioning the plant on an appropriate soil base, examining and attending to root issues, potential root removal and/or redistribution, backfilling, protecting, and watering the plant upon completion of repotting.
As container plants mature, their biomass increases and the roots grow outward and down to collect more water and nutrients. Most container plants tend to become root-bound and dry out quicker than their in-ground counterparts, and these conditions can cause a variety of issues, and lead to stunted growth and poor plant health. To prevent this from happening, it is important to make sure the root system is well dispersed in a healthy soil volume provided by an adequately sized container.
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A pollinator-friendly and ecologically sustainable garden is both beautiful and able to attract and sustain beneficial insects, reducing the need for pesticides. This publication is based on new research in habitat management for purposes of planting insect-attracting plant species in order to intentionally draw insects to garden areas and urban landscapes. This is done by providing a refuge for the insects during winter and nectar and pollen resources. Plant selection directly affects beneficial insect populations, those insects that can provide ecological benefits such as biodiversity and natural pest control. This concept of “habitat management” can lead to potential increases in pollinating and other beneficial insect populations. An increase in these populations in landscapes will contribute to improved pollination of plants and biological pest control and reduce the need for pesticides.
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An introduction to the larger canna leafroller, plus information on biology and management.
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