Fungicides
The following is a list of some fungicides that can be used in New York State for diseases of trees and shrubs. To make absolutely sure you are spraying the right fungicide for your situation, call your local Cooperative Extension agent.
Fungi and Fungicides
Fungi are plants that feed on other plants. They reproduce by means of 'spoors', small (microscopic) seeds which are distributed by the wind, or water.
Fungicides - The 2 most commonly used acceptable fungicides are sulfur and copper.
They are highly toxic to humans and other mammals, fish and aquatic invertebrates.
Fungicide: A chemical compound used to prevent the growth and spread of fungus , which can cause serious damage to a bonsai.
G ...
F Fungicide - a chemical used to combat the growth of fungus
G - L
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Organic Fungicides. While copper-based fungicides have been part of the gardener's arsenal for a while, organic fungicides are now available that may work as well and are better for the environment.
Liquid Copper Fungicide
Price: 12.95
Rooting Hormone Concentrate - 2 oz (60ml)
Price: 13.95 ...
Fungi enter your tree through wounds and particularly those wounds below soil level, so when repotting your trees the first watering should contain a fungicide.
Lopho is a fungus and is treated with a copper fungicide at a weekly dose for five or six weeks.
On repotting, water the tree with a fungicide.
Repot your tree regularly with an open compost.
Spray your trees regularly with both insecticides and fungicides.
Treat all major cuts with a sealant.
Experiments conducted in Brazil have shown that a solution of fresh cow's milk in water can be as effective as conventional fungicides for controlling powdery mildew on greenhouse grown plants.
Most of these are white spirit based solutions carrying various chemical compounds and fungicides.
However, all of the research I have been able to obtain indicates that baking soda has actually been long used as a fungicide against mildew in roses and other members of the rosaceae family (Hawthorns, Crab Apples etc).
Precautions such as regular spraying with systemic insecticides and fungicides can be useful though should be relied upon.
While the seeds are being stored check them weekly, if you have fungus growing in the bag sprinkle a little fungicide in.
Diseases such as mildew and rusts can be treated with any one of a multitude of fungicides available at all good garden centres.
A bonsai is nothing more than a miniature version of a normal plant, therefore it can be treated with commonly found insecticides and fungicides according to directions on the package.
Copper(II) sulfate is used as a fungicide and as algae control in domestic lakes and ponds. It is used in gardening powders and sprays to kill mildew.
- sterilize implements used in pruning and grooming the affected tree before you use them on other trees
- spray the healthy foliage with a fungicide
- check the location of the tree.
If you discover these abnormal outgrowths on your bonsai, cut off the affected portion and try spraying a Bordeaux mixture or copper fungicide.
To help avoid Galls, provide your Bonsai with good ventilation in a spacious area.
Although miniatures, bonsai can experience the same problems as their larger relatives, and should also be treated with the appropriate insecticides or fungicides. Organic forms of the latter are becoming more popular, and more readily available.
Keep the cut seedlings somewhat protected from too much direct sun until they root, but there is no need to cover or treat with too much care. Applying a fungicide will reduce loss to damping off. Do not allow the soil to dry out.
Aphids, mealy bug & red spider. Scale, shoot-tip moths and beetles may attack the tree and can best be controlled with a systemic insecticide. Do a preventive fungicide spray every two to three weeks with Benomyl® or Daconil®.
You will get results at 20C but 30C usually provides better results. The seedling are very prone to damping off so treat with a fungicide before sowing.
Fuchsia Rust: Pale yellowish spots appear on the surface of the leaves, the undersurface will reveal orange postules. Pick off all affected leaves, and leaves which have fallen on to the soil. Destroy. Spray with a fungicide.
Viruses can be detected by discolored leaves and sudden dieback of branches. Place the infected tree separately from your other trees to prevent cross-contamination. Treat by removing infected parts from the tree and by applying a fungicide spray.
Wet blossoms are subject to brown blight fungal disease. Remove spent blossoms immediately, and in severe cases of blight, remove all the remaining blossoms and buds and treat the tree with a fungicide.
 See also: Fungi, Bonsai, Plant, Tree, Growing
  
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