Limes should be planted in full sun, although they are tolerant of light shade. Limes prefer deep, moist, fertile soils, but will grow on drier, heavier soils. Limes are pH adaptable, growing in soils ranging in pH from 4.5 to 7.5.
A wide range of pests attack limes. Aphids which suck sap from the trees. Found in colonies on the undersides of the leaves, the honeydew from these aphids damage cars, picnic tables and other objects. Spider mites, tiny pests which reproduce very rapidly. Several species are common on limes and may cause severe discoloration. Caterpillars feed on lime foliage. Repeated defoliation can cause branch dieback and decline. Cankers: Several fungi including Phytophthora, Nectria, and others, attack limes. Stressed trees, new transplants, and trees planted too deep are most susceptible.
Apply fungicide/insecticide/phosphite spray treatments commencing in early spring. Fertilise or amend soil as specified in any soil tests taken. Check soil drainage potential and compaction levels. Prune out and destroy (burn) shoots with cankers. Perform root collar excavation where deep planting is suspected.