Description Grevillea 'Shirley Howie' is a shrub that grows to about 1.3 m tall. The leaves are narrow and about 45 mm long and about 4 mm wide. Pinkish purple flowers are produced in clusters for most of the year. The cultivar is reported to be a hybrid between Grevillea sericea and Grevillea capitellata. It originated at Howie's Nursery at Coopers Plains in Queensland. It was accepted for registration with Australian Cultivar Registration Authority (ACRA) in May 1978.