Foliar feeding
The application of a dilute solution of fertiliser to a plant’s leaves; useful as an emergency treatment for correcting trace element deficiencies, and can also used for supplementary feeding, although liquid fertilisers applied to the soil are more widely used. The absorption of liquid fertiliser is greatest where the leaf cuticle is thin, often on the undersides of the leaves, or when they are young and expanding. Foliar feeding should not be carried out in bright sunlight, as the foliage could be scorched.