Things that work well on clay: mulch hard and mulch often, it'll encourage worms to break it up, and spent mushroom compost if you can get it (there's a guy in Bath I can point you at if you can get it back to Didcot). Home-brew grass clipping compost will also work, especially if you just dig in fresh-ish stuff around plantings.
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Date: 2015-07-02 08:16 pm (UTC)Things that work well on clay: mulch hard and mulch often, it'll encourage worms to break it up, and spent mushroom compost if you can get it (there's a guy in Bath I can point you at if you can get it back to Didcot). Home-brew grass clipping compost will also work, especially if you just dig in fresh-ish stuff around plantings.