I lived on Vancouver Island in Sidney, British Columbia for 10 years. I had
clay so hard that a potter friend said it could almost be used as is with no
cleaning. After breaking a construction shovel digging in my clay, I had some
success by covering my garden with over a foot of seaweed each winter. I
collected buckets of seaweed on the beaches and because it was always raining,
salt was not a problem. The alginates in the seaweed softened the clay and I
grew wonderful vegetables. You would have to grow annuals for a while to
condition the soil before growing perennials. It takes a lot of seaweed over
many years to soften the clay. Compost and manure help too.
Connie Miller North Shore of Lake Huron Zone 4
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