I inherited a huge amount of raspberries this year and I almost ripped them all out because I know they're like weeds. I took some out and left a ton and now they're my one of my favourite garden producers. SO, SO good and SO prolific!
Spraying epsom salt on plants boosts magnesium supply to plants and increases yield. GARDEN HACK: How to start maintaining your garden. Spraying 1 table spoon of epsom salt mix with 4 litre of water twice with 10 days gap could be used for good results.