So if you want your raspberries to feed you then we recommend you first look after your canes nutrition needs.
- Raspberries are hungry plants!
- Yellowing leaves can be a sign of nutrient deficiency.
- Heavy soil, waterlogging, drought alkaline or chalky soil can also cause yellowing.
- Older plants are often worse – replace after 10 years.
- Nitrogen deficiency causes yellow leaves and debilitates plants.
- Phosphorous deficiency causes slow growth and dull leaves.
- Potassium deficiency causes browning leaf edges and poor fruiting.
- Magnesium deficiency is common on light sandy soil or where high potassium feed has been over used. Foliar feed with Epsom salts 2 or 3 times .
- Best treated with foliar feed sprayed on to leaves.
- If yellowing is persistent it may be iron deficiency so apply sequestrene.
- Maintain good hygiene and help water retention with an autumn mulch.
- Don’t over feed or underfeed or plants will blow a raspberry at you!