-
(numerous butterfly and moth species) The caterpillars of numerous species of butterflies and moths attack and eat the leaves and stems of a wide range of garden plants, often causing extensive damage.
-
(Psila rosae) Carrot fly is the most serious problem of carrots and some other crops. The maggots tunnel through the roots, making much of the roots inedible.
-
(several species, including Lygocoris pabulinus and Lygus rugulipennis) Capsid bugs are common pests on a wide range of plants. They produce small holes in leaves, which enlarge to produce ragged growth, and flowers fail or abort.
-
(Delia radicum) Cabbage root fly maggots eat the roots of brassicas, and can kill seedlings and young plants. They cause more mature plants to wilt and even die.
-
Nitrogen deficiency is a common plant disorder in poor soils or after excessive winter rain. It results in yellow or yellowing leaves and spindly or stunted growth.
-
Magnesium deficiency is a plant disorder that causes the leaves to turn yellow between the veins, sometimes with reddish tints. It also results in early leaf fall.
-
Lime-induced Chlorosis Iron deficiency, sometimes referred to as lime-induced chlorosis, is a plant disorder that causes the leaves to turn yellow, between the veins, sometimes with brown edges.
-
Many trees, shrubs and climbing plants are grafted onto a rootstock – and sometimes that graft can fail. This leads to the grafted variety dying back or dying.