Foliar feeding is a technique of feeding plants by applying liquid fertilizer directly to the leaves.[1] Plants are able to absorb essential elements through their leaves.[2] The absorption takes place through their stomata and also through their epidermis.[citation needed] Transport is usually faster through the stomata, but total absorption may be as great through the epidermis.[citation needed] Plants are also able to absorb nutrients through their bark.[citation needed]
Foliar feeding was earlier thought to damage tomatoes, but has become standard practice.[citation needed]