Summer Gardening with Carol Klein episode 6: As summer reaches its climax at Glebe Cottage garden in Devon, Carol Klein introduces us to a group of plants that really provides the drum roll to peak summer time: the daisy. Whether it be the bold, hot colours of heleniums and dahlias, or others, like early flowering asters that display themselves more quietly, daisies thrive in the most surprising spots and mingle brilliantly alongside other summer treasures.