Useful information for gardeners applying Organic, Biodynamic, and Permaculture principles like Companion Gardening, Natural Biological Controls, Dynamic Accumulators, and Crop Rotation for growing vegetables, flowers, herbs, and fruit.
Companion plants assist other plants in many ways. They may attract insects away from plants thus relieving the plant of that stress. They may attract predator insects which affords the same result. Companion plants may provide physical assistance in the form of shade or support for growing parts. They may also assist in making certain minerals available in the soil that help that plant. Certain plants may also assist in improving the flavour of others.
As part of companion planting, knowing which plants attract or repel which particular pest is useful to know. This forms a way of biologically controlling insects that may be affecting your plants.