cycas revoluta is called fossil trees, sago palms, king sago palms trees, is ver good for outdoor and indoor plants both for landscaping and indoor ornamental plants. Greenworld Nursery Co.,LTd own cycas revoluta 120 hecters in the mountain area, with large quantitities available. also with very good qualitys and competitive price.

Culture
Plant in sandy, fast draining soil, preferably with some organic matter. Also recommended is a light mulch of bark or leaf mold. Plants appreciate light feedings of balanced, slow release fertilizer granules or diluted liquid fertilizers. Strong fertilizers, fresh manure and the like are best avoided as they can damage the sago's coralloid roots (specialized structures that host blue-green algae that fix nitrogen from the air and make it available to the plant).
Light: Bright conditions including full sun. Sago can also handle full shade with no ill effect (its leaves grown larger in the shade). Here in Florida it seems to be less susceptible to leaf spot disease when grown in semishaded conditions where it is more protected from environmental extremes.
Moisture: Needs good drainage or it will rot. Sago is drought resistant when mature. Provide adequate moisture for good growth.
Hardiness: USDA Zones 8 - 10. Many references indicate that sago is hardy only to Zone 9. I disagree. Sago is commonly used in north Florida and other Zone 8 regions. I have personally observed mature specimens surviving temperatures of 13°F (-10.5°C) without damage - the youngsters sustained leaf damage but survived.
Propagation: Fresh seeds should be permitted to age for 2 or 3 months in a cool place before planting. Old, dry seeds should be soaked in water for 24 hours. Plant seeds in moist sand and keep warm. Germination should occur in 2 to 3 months.

New plants can also be obtained by removing suckering offsets from the base of the trunks. Remove leaves and plant in moist, well drained soil. This technique is most successful when performed in the winter when plant is dormant (root growth is still active during this period).

Usage
This is a wonderful plant for both indoor and outdoor use. It looks great in the shrub border or as an accent on an expanse of lawn or near the patio. Use in entryways or in rock and sand gardens. It mixes well with palms and combines well with border grass (Liriope muscari), podocarpus (Podocarpus macrophylla) and camellias (Camellia japonica). Sago is an excellent container plant for use outdoors and in the home. It has been a popular house plant in the west for over a century and in Japan for even longer. In Japan the sago is also used as a bonsai subject. Dwarfs of great value are produced by withholding moisture and packing the plant in sand. These often have very thin trunks or interesting deformities and are sometimes sold under the name Cycas nana.