For a bumper crop of top tomatoes, plant in Tui Tomato Mix, which contains extra potassium to encourage a plentiful harvest. Feed with Tui Tomato Food every four weeks – a blend of nitrogen, phosphorus and a generous amount of potassium – to promote growth and fruiting potential. Protect your tomato plants from insect pests with Tui Insect Eliminator for Fruit & Veges.