Gall on Emerald n' Gold Euonymus

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Last year a member asked why her Emerald n’ Gold Euonumus hadnt grown? I suggested it was a growth ( I mistakenly called it canker) because thats what happened to some of mine.
I had 18 Euonymus and about 6 have succumbed to Crown Gall. Today I had a look to see why one has not grown although it looks very healthy, I found 5 galls on it, (they are not visible unless you look for them) I have consigned this plant to the bin.
‘Emerald n’ Gold’ is a cultivar of wintercreeper euonymus, which is particularly susceptible. Young galls are smooth and greenish-white to tan. As they mature, galls become dark, hard and woody; they eventually crack and decay. Crown galls are a solid mass of tissue all the way through, unlike insect galls.
Plants suffering from crown gall often exhibit stem dieback and stunted growth, because the galls disrupt the movement of water and nutrients between roots and leaves. This certainly detracts from their ornamental value, and severely infested plants may die.
The severity of the disease depends on the size, number, and location of the galls. Galls at the crown of young plants cause the greatest damage, and can eventually kill them. Crown gall may have little noticeable effect on older, established plants.

• 1 Aug, 2010
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