DOFF Azalia, Camellia, Rhododendron Feed Concentrate is created for all ericaceous plants. Enriched with micronutrients including nitrogen, phosphorus, and potassium, which play a vital role in supporting healthy growth and vibrant colors. This optimal blend of nutrients helps prevent deficiencies and supports overall plant health. Easy to dilute liquid formula. One litre will make up to 300 litres of plant feed.