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Gardening tips: plant tufted hairgrass

Deschampsia cespitosa ‘Goldtau’ is a blond, airy perennial.

 Deschampsia cespitosa ‘Goldtau’ is a blond, airy perennial. Photograph: Christina Bollen/Alamy

Plant this Deschampsia cespitosa ‘Goldtau’, or tufted hairgrass, is a blond, airy perennial that stays helpfully compact, at about 80cm tall, and is evergreen to boot. It looks great with agastaches, rudbeckias and echinaceas, and will do well in full sun or partial shade.

Visit this Abbotsbury Subtropical Gardens in Dorset hosts the Great Dorset Plant Fair tomorrow: a chance to source rare and exotic plants. Enjoy the garden’s many treasures, including stunning coastal views and some seriously huge gunneras. Plus, you can bring your dog.

Thin this If you have let hardy annuals, such as English marigolds, cornflowers and California poppies self-seed, it is time to thin out clumps so that each plant gets a chance to thrive. It is worth trying to winkle seedlings out carefully with a good root system so you can replant them later.