Cotswolds Garden - FAQs
Frequently asked gardening related questions
Chlorosis on roses is the yellowing of leaves due to a lack of chlorophyll, often indicating a nutrient deficiency. The most common cause in roses is iron deficiency, which appears as yellow leaves with prominent green veins (interveinal chlorosis). This is frequently caused by high soil pH (alkaline or chalky soil), which makes iron unavailable to the plant even if it's present in the soil. Other causes include magnesium deficiency or waterlogging affecting nutrient uptake. Test your soil pH and adjust as needed, or apply iron chelates.