There is some evidence that healthy plants are less likely to be infested by pests than plants in low vigor. The most effective and most important of all practices is to observe what is going on in the garden. Many serious disease or insect problems can be halted or slowed by the gardener who knows what to look for and regularly visits the garden. Cultural methods of suppressing insect and mite problems in the landscape include, soil preparation, choosing plants that are not attractive to pests or choosing plants that are tolerant of insects and diseases. Other ways to eliminate pests are by pruning or raking and then destroying infested plant residues.
Irrigation can also reduce pest populations.
Providing a favorable soil environment will result in healthy plants which can resist pests and diseases. Applying fertilize and lime according to a soil analysis, allows plants to have access to all the necessary soil nutrients, and provides a suitable environment for earthworms and microorganisms. Supplement chemical fertilizers with organic material or compost to help ensure that all trace elements and major nutrients are available. When using manure and compost, be sure they are worked into the soil. Otherwise, millipedes, white grubs, and other pests may be encouraged.