Cousins to the gladiola, these are hardy plants that produce clumps of green sword-shaped leaves, with tall, arching spikes of funnel-shaped blossoms appearing in mid to late summer. Several named varieties are now available, in a range of hot colours. This selection has large deep orange flowers with a mahogany throat, beginning in August. Outstanding cut flowers. Clumps should be divided every three years, in spring. Watch for spider mite and thrips on the foliage. In colder regions, the corms can be stored like gladioli, wintered in pots, or mulched heavily outdoors.