Many things make plants unwell. Diseases are only one cause of poor plant growth. In diagnosing problems of plants from the production area, the retail area, the landscape, or home all the possible ca
Damping-off is the rotting of seeds in the soil and destruction of newly emerged seedlings by fungi.
Fungi belonging to the genus Cylindrocladium attack over 100 woody ornamentals including azaleas, rhododendrons, camellias, junipers, white pine, and holly. Many foliage plants including asparagus fer
Cucumber mosaic virus (CMV) was named for one of the first plants in which it was found. However, it can infect a very large number of different woody and herbaceous plant species. CMV is made up of nucleic acid (ribonuc
The plant pathogenic fungus Botrytis is found virtually everywhere plants are grown. It is fast growing, can grow on many different sources of nutrients, survives well in the greenhouse, and can attack many different typ
Black Root Rot (Thielaviopsis)
The fungus Thielaviopsis basicola (Berk. & Br.) Ferraris is a soil inhabiting fungus that can cause root rot and branch dieback on a number of woody and herbaceous plants including holly, begonia, geranium, poinsetti
Bacterial Wilt - Ralstonia solanacearum
Bacteria called Ralstonia solanacearum attack almost 200 plant species in 33 different plant families. This constitutes one of the largest known host ranges for any plant pathogenic bacterium.
Bacterial Diseases Of Ornamentals
Bacteria are microscopic, single-celled organisms that have a cell wall. Their genetic material, a circular strand of DNA, floats inside the cell and is not surrounded by a nuclear membrane. Therefore
Assessing the Risk of Disease in Nurseries
The following is a guide to assessing the threat of disease in a nursery operation.
Assessing the Risk of Disease in Greenhouses
The following is a guide to assessing the various procedures and equipment used in a greenhouse, keeping in mind the threat of pathogen, mite, and insect population development in the crops being grow
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How to Attract Bug-Eating Birds
As a founding employee of Gardeners Supply, I wore many different hats over the years. Currently, I have my own company called Johnnie Brook Creative. The gardens around my home in Richmond, VT, include a large v
Protect yourself from summer insect pests
Ive been gardening and writing about gardening for more than 20 years, yet I find Im always learning new things about the plants, insects and other critters that call my backyard home. Thats the great thing about
When I started working at Gardeners Supply in the 1990s, my Vermont backyard was pretty green—with grass. Today, theres just a tiny bit of the original lawn left. Most of the available space has given way to trees
Ive been gardening and writing about gardening for more than 20 years, yet I find Im always learning new things about the plants, insects and other critters that call my backyard home. Thats the great thing about
Ive been gardening and writing about gardening for more than 20 years, yet I find Im always learning new things about the plants, insects and other critters that call my backyard home. Thats the great thing about
How to Prevent Late Blight on Tomatoes
When I started working at Gardeners Supply in the 1990s, my Vermont backyard was pretty green—with grass. Today, theres just a tiny bit of the original lawn left. Most of the available space has given way to trees
What to Do When Your Plant Looks Sick Ive been gardening and writing about gardening for more than 20 years, yet I find Im always learning new things about the plants, insects and other critters that call my back
Solid fences, such as this Reed Fence, ensure that animals cant see what theyre missing. Deer Fences can be lightweight, yet effective. The Low Pest Fence prevents pesky rabbits, woodchucks and other small
Set traps near a food source. For example, a birdfeeder or along a runaway, such as at the base of a tree. If youve tried repelling, excluding, and scaring away a pest animal and its still causing prob
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