Species Specific > Shimpaku Juniper Bonsai Discussion

Shimpaku yellowing

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Chrisl:
Could be scale too, my small Itoigawa is just getting over a bad infestation.  Same yellowing.

richjay:
Thank you for all of the great advice.  ;D

VanceWood:
Scale could be the problem but spider mites generally cause the tree to turn greyish in color.  Put  a piece of white paper under the branches and with the flat of you hand kind of spank the foliage pads.  Look at the paper with a magnifying glass.  Do you see some dust?  Look at that with the magnifying glass; does it move?  If it does you have spider mites. 

Personally I think you are having a watering problem.  Your soil is not operating correctly.  The tree is either drying out and staying that way too long or it is sitting in soggy soil.  The results are the same both ways.

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