Of the mineral fertilizers, it is best to use ammonium nitrate for feeding raspberries in May.
Timur Khomichev raspberry raspberry feeding fertilizing raspberries in spring raspberry feeding in may Garden and Vegetable Garden 10 May 2024You should not use ash obtained from burning conifers to feed raspberries.
Timur Khomichev raspberry wood ash Ash for raspberries raspberry feeding with ash mulch for raspberries Garden and Vegetable Garden 4 April 2024