Help !Please

I am a novice gardener ,who has tried many new things this year.However i have several fruit trees,apple,pear plum. My problem is that my crop always (last 2 years) seems to start growinf , flowers lovely etc. Then for some reason i seem to become infested with what looks like fluffy white gumpf on the top few branches, then i get an infestation of what looks like to me little tiny black beings. I have coated the bottom of all my fruit trees with fruit tree gum, but it has not helped .Any advice would be greatly appreciated, i do not want to lose any more of my fruit. The smaller fruit seems to be dropping off daily .
If it helps it looks like my potatoes grown in a large container also seem to be getting infested with the same type of being.
Many many thanks
Damian:cnfs:

 

from the sounds of you you might have spider mite, not having any fruit trees I don't know what to do about it and with the spuds I'd remove the infected bits and see about a spray (not knowing if your growing organicly) I may be wrong but it might be worth having a look online for spider mite to see if that's what it is.

 

I would take a sample to a local nursery and see what the experts know about what's happening. They would know what to do about it too.

 

Wooly aphid I reckon. Any good garden centre should sell "spraying oil". You may need to hit them 2-3 times, but it is safe to use on fruit and it will kill them in the end. Other wise just wash them off with soapy water and a J cloth (if you can reach).

Good Luck