I am still learning - so asked the famous AI
Dry leaves on a red raspberry plant could be caused by a few different factors. Here are some common reasons and solutions:
1. Underwatering or Overwatering
- Signs: Crispy, dry, or curling leaves
- Fix: Raspberries need consistent moisture but well-drained soil. Water deeply 1-2 times per week, especially in hot weather.
2. Heat Stress or Sunburn
- Signs: Leaves turning brown or crispy, especially on the edges
- Fix: Provide some afternoon shade if temperatures are too high, and mulch around the base to retain moisture.
3. Nutrient Deficiency
- Signs: Yellowing before drying out
- Fix: Fertilize with a balanced fertilizer (10-10-10) or compost in early spring and mid-summer.
4. Pests or Diseases
- Signs: Holes, discoloration, or webbing on leaves
- Fix: Check for spider mites, aphids, or fungal infections. Use neem oil or insecticidal soap if pests are present. Remove and destroy any diseased leaves.
5. Poor Soil Drainage
- Signs: Water pooling around the roots, leading to root rot
- Fix: Ensure well-draining soil and avoid planting in low spots where water accumulates.
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Because of where the crisping is - I would venture it is too hot there. Plant something that makes a little shade for it perhaps?