Ceanosis
By Laura2a
United Kingdom 
My mother has a ceanosis tree which has always flowered lilac but is now flowering yellow, why would it change colour
30 May, 2008
Answers
If this is a Ceanothus we are talking about then I don't know why the flowers are now yellow.
I do know that they do like well drained soil ,a sheltered site and are frost to half hardy. They are best positioned south or west facing in cold areas.
If the leaves are at all yellow this may indicate an iron deficiency or the possibility of too much water.
3 Jun, 2008
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Is this a Ceanothus we are talking about please?
31 May, 2008