If you've got an established, large clump of rhubarb, now is the best time to divide and replant. Prepare the soil ready with a generous allowance of either well-rotted manure (NOT fresh - that'll kill your rhubarb for sure) or mushroom compost.
Replant sections in your prepared soil, so that the buds are about level with the surface. If you've more chunks than you have need for, offer them to someone with a new allotment! Or, alternatively, you could force them in a shed or garage to get a delicate indoor forced rhubarb like they produce in Yorkshire.
Kent's climate is drier, hotter and has a longer growing season than the average for the UK. Advice in gardening books may not fit Kent. This blog has local tips on what will grow and when to do garden jobs.
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