I apologize for this delayed reply to your gardening question and hope it is still helpful to you. The best thing you can do for a clay soil is to add composted organic matter, which will improve the structure and internal drainage and aeration of the soil. Do this any time you replant a garden bed. Add a couple of inches of compost and work it in deeply. Also building up raised planting beds will improve drainage during rainy periods.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
Q&A Library Searching Tips