Looking for Some Help !!

Hi Everyone, such a great forum i just had to register...

I was looking around the local college today and took various photos of pests and diseases. I'm looking for some help to identify some of the culprits below.

Hope you can help !!!


Rhododendron with some kind of silky nest...


Rhododendron leaves been eaten - Vine Weevil Perhaps ?


Prunus - Wiggler on this leaf seemed to slip off a few times but held on by a silky thread and climbed back up.


Prunus - Not sure why this is yellow, and also has green mildew type stuff in middle.


Prunus - Holes and Leafs cuts ?


Red Horse Chestnut - Not sure what the silky, wooly like stuff is in by the mid-rib.

 

Can no one help ?

 

Two Days and No Help ?

 

sorry i cant help!!

i think vine weevil tend to damage the roots and not the leaves and its a bit early for the adults - have a look in the soil for c shaped grubs with a black end

loopy

 

Hi Moosic

The damage you've shown could have been caused by various larvae, caterpillars or weevils.

These days, if I find a destructive pest that's likely to cause serious damage to my plants, I zap them with a broad spectrum insecticide e.g. Provado's Ultimate Bug killer. I don't worry about an exact identification because it won't make any difference to what I use to deal with them.

Just a word about vine weevils - I'm afraid the adults can chew leaves and leave a series of "wandering" holes in them. And I squashed an adult weevil in my garden only yesterday! The damage doesn't look like any of your photos, though.

 

When I'm trying to identify garden pests and diseases, I find this site usefull :

http://www.bbc.co.uk/gardening/advice/pests_and_diseases/popup.shtml

 

I`ll have a stab.
1) Mealy bug.
2) Definitely NOT Vine Weevil, probably caterpillar of some sort.
3) Possibly Umber Moth caterpillar.
4)Chlorosis. If it`s an older leaf, usually lower down, then this is normal. The leaf will eventually drop off.
5) Caterpillar and/or scorch.
6) Downy Mildew or Wooly Aphid.

:gnthb:

 

Hi Moosic. I think it really doesn't matter what is causing the damage.
If it is worrying you the answer is a general purpose insecticide.
I don't like to use the stuff myself. if the damage is minimal I would leave well alone.
If the damage is critical then spray the lot.
The choice is yours.

 

Alice, what do you use if it is NOT an insect? :gnthb:

 

I'm with Alice. If the rest of the plant is healthy, just snip of the damaged leaves. I'm sure it can spare a few to feed the other creatures!

Chris

 

I disagree, you need to know what the pest is, so that you can prevent it happening again.:gnthb: