Is It Possible To Have Soil That Is Too Rich?

oats as cover crops

Q: Is it possible to have soil that is too rich? I’ve had a vegetable garden for
thirty years and I’ve amended it each year but my yields are declining. I had
my soil tested and all levels were very high.

A: If you have amended your soil every year with compost, it may have too
much organic matter in it. This would make it drain poorly and that could lead
to plant disease or decline. Your county Extension office can facilitate a soil
test for organic matter. It costs around $10. If your garden soil does seem a bit
spongy, my recommendation is to add expanded slate (PermaTill). Many Ace
hardware stores carry it.

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