Succulents are a particularly simple plant to grow and can survive in most conditions. During the summer months, spritz this tonic directly onto the soil once every 10-14 days to keep your succulent looking healthy. Each set contains 100ml of natural plant food, designed to last for around a year. We make our plant food using nutritious seaweed harvested from a nearby beach. Seaweed is a wonderful fertiliser because it is rich in nutrients and carbohydrates, helping your plants to grow strong and healthy.