Brooklyn1 Gravesend1 writes:

rayp.a0a2216.gardenbanana.uk wrote:

Over the last 2 months I have noticed some significant holes in my 3
year old plant. I fed it with liquid fertiliser for Azalea, Camellia and
Rhododendron about 4 weeks ago to see if this would help. What could
this be ? I don't think it's slugs or weevil because of the way the
leaves look burnt.

The plant is a half-shady spot next a fence so isn't exposed to the
elements.

Any ideas ? Pictures attached.
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http://www.gardenbanter.co.uk/attach...chmentid=14923 |
http://www.gardenbanter.co.uk/attach...chmentid=14924

Looks like chemical damage... STOP IT!

I was going to say it looks like an out of control smoker dropping
hot ashes.

Seriously, I have no experience with Rhododendron pests but that
looks like insects for sure.

Look UNDER the leaves. If you don't see anything in the daytime,
try again with a flashlight at night.

Google suggests it's weevils:

http://tinyurl.com/8294m49s

http://tinyurl.com/7tcfxyq

--
Dan Espen