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With the passing of the summer solstice, the days are at their longest and the sun is at its highest. And with the garden growing before our eyes, Monty Don is in his borders replacing plants like wallflowers that are past their best with other plants that will give colour right through to autumn.

Carol Klein will be answering a viewer's letter with advice on gardening to provide a habitat for wildlife.

Joe Swift picks up design tips from Kelmarsh Hall, whose 18th century garden is the epitome of the effortless, relaxed, English country style.

And in Monty's garden, the first vegetables are ready to harvest.