Cheshire,
United Kingdom 
how to control yellowing of leaves on buxos trees
25 May, 2010
Cheshire,
United Kingdom
how to control yellowing of leaves on buxos trees
25 May, 2010
The problem depends on what part of the leaf is turning yellow. If the parts in between the veins are turning yellow this suggests magnesium or iron deficiency in the plant. If older leaves are dying this suggests a nitrogen deficiency. In any case, keep the fertiliser up to it. Be careful, also, not to overwater or underwater it.
31 May, 2010