Black smelly slug

Question From: 
Bianca Recht in  Neerim ,  Melb. VIC


Nature of problem: 
Black smelly slug


Type of Plant (if known): 
cherry tree


Symptoms of Plant Illness (please try NOT to diagnose your problems yourself): 
Leaves are curled and shell like- the slug eats away at the leaves


Soil Type (e.g. sandy, clay or loam) OR Potting Mix Type: 
black soil with clay under it


How often do you water the plant:
Only in very hot weather


How many hours of sunlight does the plant get each day:


What type of plant is it:
Cherry tree of organic stock


How long since you planted it:
3 years


Have you fertilised? If so, with what and when:
I fed NutraKelp – 8 months ago in 2014 – which made all my trees flourish amazingly. No I don’t fertile with animal matter.


Is the plant indoors or outdoors: 
outdoor, orchard open space


What other treatments have you given the plant: 
Talcum powder, Citrus spray, Bordeaux

Upload photo if available: 

Other Comments: 
I also placed a lot of mulch after not having not doing so for 2 years, just to see if that helps. No it doesn’t.
It is not water logged. It is windy sometimes as it is an open space orchard. There is about 5 meters between all the trees. I also have stone fruit and few nut trees.
If I don’t spray the trees, they don’t grow.
When should I prune , after the fruiting?
The Plum trees have similar problem.

Any help would be greatly appreciated.


Answer: For the Pear & Cherry slug you might try spraying with Neem oil or Yates Success (both are natural products). Yes, prune after fruiting.  Don