Richard

For gardeners who do not fertilize, the effects of mycorrhizae will always be dramatic because the plants are now better equipped to uptake nutrients naturally present in the soil. Keep in mind that within about 7 years plants will deplete any nutrients naturally present in the soil. For gardeners who already fertilze to provide nutrition at a more even rate, the effects of mycorrhizae will be less dramatic. The most cost effective means of innoculating soil with mycorrhizae is to mix in worm castings at the time of planting, then make sure the surface of the ground has a 3 to 4 inch layer of 1-inch diameter mulch to keep the surface from drying out too much. Applied this way, mycorrhizae need only be added once. The population will then remain with the plants unless the soil is deeply treated with an extreme fungicide. Note also that many soils already contain mycorrhizae: the gardener simply needs to put mulch on the surface so that the population can flourish.

__________________
Back in business at plantsthatproduce.com