Blueberry plants, I would call Emery's, out near Colliers Mill.  Beach plum I know of one place in Cape May, but I cannot recollect the name. I bought several plants from the PPA during their spring plant sale several years ago, this is the first year we have plums.  Have you tried a search on the 'net?  You can also pick the plums during the Beach Plum Festival at IBSP in September.  Rare Find Nursery in Jackson also stocks both.
 
I tried the netting, very frustrating endeavor. I think it trapped more birds and chipmunks then it kept out.
			
			I tried the netting, very frustrating endeavor. I think it trapped more birds and chipmunks then it kept out.
 
				
		 
			