FLOWERING SHRUB. The tubularof Grevillea rosmarinifolia are a warm crimson and produced in long, terminal racemes in May. G. sulphured is canary-yellow. Both species grow to about 6 ft. but are only suitable for mild districts and must be given the shelter of a warm wall. They dislike chalky soils. Increase by sown under glass in March at a temperature of 60—65 degrees F.