are they in pots too, raspberrys like lots of water and should be planted about 3inches deep and spaced about a foot apart, ive cramed mine in a bit more than this and mine seem to be ok ive got mine in pots, but they only woke up about 2 and half weeks ago as planted them a bit late after breaking 3 ribs. give weekly feeds of liquid grow more as per directions on bottle usually one cap to 7 litres of water and in this weather daily water when sun gone in or in the morning to prevent leave scortch. ive been really luck only my nectrine tree had a problem with it got its leaves scortched even though not watered during the day, dont know if it will fruit now.