Callistemon pachyphyllus is a small to medium sized shrub, usually reaching around 1 metre in height. Although not widely cultivated, C.pachyphyllus is a hardy plant under a wide range of garden conditions. The green flowered form is the variety viridis which is found throughout the range of the species. The plant responds to annual fertilising after flowering and may be pruned severely if necessary. Many Callistemons can tolerate less than perfect drainage but usually perform best in gardens with reasonable drainage and regular availability of water.
Propagation is easy from both seed and cuttings.
The green form could be expected to come true from seed. You may have reached this description from one of several different sources.