Pests can be treated either chemically or organically and both methods can be extremely effective. When mixing insecticide solutions, always follow the manufacturer's instructions exactly. Too weak a solution and the insects will remain, ...
INSECTS & DISEASES
Since your bonsai is a tree in miniature, it can be treated
for insects and diseases the same as any other tree. If
you discover any insects or diseases, visit our website ...
Insects
The Type of insect taking an interest in your tree will vary with where you are in the world, however your response will tend to be the same. Man's ingenuity has provided us with chemicals to really put them off their lunch.
INSECTS & DISEASE
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.
Insects
My plants have had no particular insect susceptibility.
Leaf drop
Phyllanthus will drop many of its inner leaves in the dormant season, or in the fall period. These inner leaves turn yellow, and quickly fall off.
INSECTS
Red Spider Mites
Usually found in warm conditions, and more prominent with indoor varieties. The red spider mite is microscopic and barely visible with a microscope.
Insects often found on Bonsai:
Chewing Insects: Grasshoppers, Ants Borers, Caterpillars, Carpenter Bees, Cicidas, Leafminers, Slugs and Snails
Sucking Insects: Aphids, Scale, Mites, Spittlebugs, Wasps, Weevils ...
How Insects Injure Plants: MOUTHPARTS
Chewing - (grasshoppers, caterpillars, beetles & grubs) - bites/holes
Piercing/Sucking - (aphids, scale, mealybugs, whitefly) causing stunting, discoloration ...
Scale insects are sap sucking insects that attach themselves to the bark of bonsai and cover themselves in a protective shell brown shell. These are best removed by handpicking, as contact insecticides are unable to bypass the protective covering.
[edit] Insects and diseases
Main article: List of rhododendron diseases ...
Insects and fungal disease love warm damp weather. My particular bane is leaf spot on elms and yaupons. Spray with a fungal spray if you see any spots on the leaves of your tree.
No insects or cobwebs should be visible on the tree.
All leaves should be of similar size; overlarge leaves should be removed.
All flowers or fruit should be free of blemishes.
The insects that are almost microscopic are usually the ones that will cause you the most problems, mainly because it's "out of sight, out of mind".
Know Your Insects!
It's all fun and games until someone loses a branch:
Bonsai Trivia? Okay, I'll bite.
Pests: Scale insects, Wooly Aphids
Diseases: Yellowing leaves and leaf-drop caused by incorrect placement, poor humidity levels or incorrect watering.
Medical Use: ...
The cayenne powder, sprayed onto the surface of the compost in your pots, is also reputed to deter crawling insects or sciarid flies, but I have yet to try this. Sciarid is a pest that I have very little trouble with anyway.
Appearance: Very tiny reddish insects mostly recognized by the presence of their very fine whitish hair-like webs, which sometimes form a loose ball around very small branches.
Several insects are too small to see with the naked eye if you are over 40 like me. Two-spotted mites are one of my biggest problems and they are nearly invisible without the lens.
How do I prevent diseases and insects from infecting my bonsai?
As living trees, bonsai are susceptible to insect attacks and disease.
Some of the more common insects and appropriate methods of control:
APHIDS - small, juicy-looking insects, usually light green, but can be white, black or grey, that suck sap from young leaves and flower buds.
One thing to watch our for throughout your Juniper Bonsai tree care program is red spider insects. These are a common problem to all Juniper Bonsai trees.
Caterpllars - These insects are voracious eaters, and when left to themselves can devour the foliage of your bonsai to the point of ruin. Caterpillars can be difficult to deal with because the don't respond to spray insecticides that well.
The oak bonsai tree is more likely to have problems with insects and disease than many other types of tree. In the wild, it can support over 200 types of insects. They are also prone to oak scale and can develop a powdery mildew in the summer.
Inspect the plant for insects. Nothing is more distressing to the visitors of a bonsai exhibit or the other exhibitors than to have someone declare in a loud derisive voice "there are Aphids on this plant" or "look at these nice fat Scale".
Bonsai oak trees are more susceptible to insects and diseases than any other trees, with white oak being the worst. Insects are common on a lot of trees, but with diseases it can affect the appearance of the tree and its general care.
Check your plants at least once per week, look for pests, insects etc... Brown tip leaves could indicate overwatering. Be sure to isolate the plant whenever insects are present. Use a good all purpose insect spray.
Most of the time it is either aphids or scale insects, this is ok because they are some of the simplest to rid yourself of.
Ficus retusa does not seem to be seriously bothered by insects or fungal pests. It is quite possible to find an occasional scale but the milky sap of the tree seems to discourage most insects.
5. A White Note Card is useful for detecting tiny insects such as flower thrips and mites. Simply shake the plant part over the white card and look for the insects moving against the white background.
Insecticide: A chemical (synthetic or organic) used to kill or repel insects. There are numerous botanical and mineral powders that are toxic to insects, as well as biodegradable chemicals such as insecticidal soaps.
Pests and Diseases: Susceptible to Aphids and Scale insects. Harmless sooty mould may grow on honeydew produced by aphids and scale insects. Virus diseases can blemish flowers.
Pests and diseases: Boreres and chewing insects seem to be the only pests bothering the plant. Cankers may develop on young trunks where soil is excessively wet.
Dwarf Jade - Portulacaria afra ...
Close contact with your tree enables you to see any tiny faults, insects and to keep an eye on the general well being of your tree. Any branches growing down or crossing can be rectified.
WIRING: ...
This Traditional bonsai cut and prune dressing is used to seal tree wounds against insects, disease, and weather.
It helps to speed healing and minimize the shock of wounds when styling bonsai or repairing branches.
Systemic - An insecticide or fungicide that enters the tree to prevent the infestation of insects or diseases.
Tap root - The main root of a tree that anchors the tree in the ground.
Maples are susceptible to various pests including spring colonisation of young shoots by aphids. Caterpillars and scale insects can also be a problem.
Topics: Bonsai, bonsai species, outdoor bonsai
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They are humbling. They are authentic. They are nature's ultimate survivors, having escaped the ravages of weather, fire, disease, insects, and humans. They are even an antidote to cultural amnesia.21 ...
Bonsai pruning sealer helps the cut area to retain the valuable moisture required to heal the cut properly and minimize the scar. And moreover, it prevents diseases and insects from affecting our bonsai tree after pruning.
I like to leave a little of the old soil as long as disease, fungus or insects aren't in the picture. Certain microbes in the soil are beneficial to your plant and colonize the soil around it.
The soil may be sterilized before use, to destroy insects and disease-producing organisms.
aphids, mealy bugs, scale and all potential pests can be taken care of if caught early and sprayed with an insecticide. I recommend the Wonder Garden Gun.
Always remember that some systematic insecticides can prevent infestations of some insects, ...
 See also: Bonsai, Plant, Tree, Growing, Pruning
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