Author Topic: Post Spidermite Help on J. Procumbems  (Read 1043 times)

mjwise

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Post Spidermite Help on J. Procumbems
« on: July 01, 2013, 08:04 PM »
Hi all, first post, long time lurker. I recently reacquired some junipers my parents had kept for many years for me. Much of the interior was dead due to the plant growing freely for years. Shortly after I received them they were infested with mites, not sure if they came to me this way or they got them at my home (southern IL 5b).

They are no longer infested with mites, and are growing strong but the strong discoloration of the foliage is still very evident. How do I go about correcting this issue?

Must I remove the discolored foliage completely? Will it ever recover?

Some sections have discolored damage just on the interior and fresh new growth/buds on the exteriors. Can the damaged or discolored needles be removed? If posting a picture will help I can get one in the light tomorrow.

Appreciate any responses, I am aware how to treat and prevent them now, just not sure how to recover!
« Last Edit: July 01, 2013, 08:14 PM by mjwise »
 

MatsuBonsai

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Re: Post Spidermite Help on J. Procumbems
« Reply #1 on: July 02, 2013, 10:00 AM »
Are you sure they're gone?  Spider mites are persistent little buggers.

Soil?  Water?  Fertilizer?  Sun?
 

augustine

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Re: Post Spidermite Help on J. Procumbems
« Reply #2 on: July 02, 2013, 11:37 AM »
John's point is important. I would continue to be vigilant and treat for mites. (In case you don't know you can place a white sheet of paper under the branches tap or comp through the needles and check the paper for mites. They are easy to spot because they will move toward the edge of the paper...)

Some completely damaged foliage can be removed. Cut back to the new green buds. I am unsure about keeping damaged branches that have green at the tips. I'd have to have a close look to see how bad they are/were infested. The decision is whether to keep or eliminate. Part of that decision depends upon how much foliage has to be removed overall. It's best to keep as much foliage as possible.

Otherwise, get the plants healthy with proper siting, fertilizer and water. No pruning, wiring or anything else that would cause stress. Do you keep them in full sun? If so I would site in some afternoon shade and move gradually to full sun.

You can hose the foliage off regularly to keep mites down, they like dry conditions. On the other hand you have to watch for fungus which could be an issue depending on where you live.

Best,

Augustine
central MD 7a
 

mjwise

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Re: Post Spidermite Help on J. Procumbems
« Reply #3 on: July 02, 2013, 02:46 PM »
They are kept in full sun, they are still in original nursery soil as I have yet to repot them into bonsai soil/pots. Ive been using fertilizer cakes/fish emulsion/sea kelp. Its  been raining heavily so have been unable to reapply any insecticide. I will check them again as soon as they are dry. They are very vigorous otherwise, producing much new growth.