bonsai tree care





Spider mites are not insects

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Rather, they are members of the family of arachnids. This is what they like:

  • hot, dry and dusty conditions
  • stressed trees
  • selected pesticides – (see this article UC IPM for details)

If possible, avoid these. , Red spider pests are not controlled, they can severely damage the bonsai.

Although they are too small so clearly see without magnification, the damage is identifiable if you know what to look for.

Spider mite damage

Spider damage red on black pine (photos April 2012)

Checking spider mites can be done with a white sheet of paper.

  1. Pending blank paper under foliage suspected infestation
  2. Touch the branch
  3. Check to see if any of the black dots are moving

Checking for spider mite

paper traps dirt and mites, if present

Checking for spider mite

If the points are moved, it is possible having red spider

mites reproduce very quickly. If you’re not quick to catch them, they can overcome a garden of pine trees in a matter of days. And even if the infestation is rapidly stopped, affected trees show damage until the needles mature next year.

The best defense against spider mites – as is the case with all infestations -. It is to keep healthy and well hydrated trees, especially during the warmer summer months

oils and insecticidal soaps are the typical first line of defense. If you must use pesticides, acaricides find and read the instructions carefully to ensure they do not aggravate the problem.

Mites also provide a good reason for spraying lime sulfur or other dormant sprays in winter as they or their eggs can hang out during the cold months under the leaves or bark, patiently waiting favorable conditions when the weather warms.

Read also:   Landscape bonsai tree - Part 3

This article was originally published on bonsaitonight.com


Spider mites are not insects

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