leaves on camellia
got a hedge of mixed sasanqua camellias and this year some of the
new leaves are thick and lumpy. What's the problem and can I do
anything to stop it getting worse?
is a relatively common problem in camellias known as leaf gall.
It's caused by a fungus which infects the new leaves while they
are still very small. The fungus causes some of the cells in the
leaves to grow very large so the leaf grows much thicker than normal
and often in slightly different colours, such as light green, white
or reddish. The infected leaves can look very unsightly, but the
overall effect on the plant is negligible.
You could simply pick
off infected leaves as soon as they appear and burn them or put
them out in the rubbish. Copper-based sprays, like copper oxychloride
or Champion Copper applied in early spring after flowering, just
as new leaves are forming, can also help reduce the problem.
Gardener, Issue 162, 2005, Page 24
Reproduced with permission from the former Weekend Gardener magazine. The views expressed here are not necessarily those of the RNZIH.