A friend in Brisbane was given a Eucalyptus Summer Beauty (hybrid of
Eucalyptus ficifolia & ptychocarpa) which is a grafted flowering
Eucalyptus. It is in a 6 inch pot and about 3 foot tall with about 20
developing flowers. She has only had it for a couple of weeks and it is
still in the original pot but all the leaves have changed from the
original dark green to a very pale silvery grey green. There are a few
leaves left with patches of the original dark green colour and these
leaves show a distinct edge to the colour change as if it is
disease/insect damage. My guess is it has been overwatered.

Does anyone know what may be causing the leaf colour change? Is this
terminal?

--
Graham Corbin
(Remove nospam. from my email to reply)