Ampnbspcustomer review ratinglobelia 39starship scarlet39 is a half hardy perennial plant that produces 15cm 4063441 spikes of bright scarlet red flowers from june to september it will spread about 45cm 40183441 making it an ideal ground cover plant to provide colour and act as a weed supressant suitable for garden borders and rockeries in full sun or partial shade height 50cm 40203441 spread 45cm 40183441