Thrinax radiata, also known as the Floridathatchpalm, is a medium to slow growing palm in the family Arecaceae. Sun or shade is fine for the thatch, and the more shade, the more slowly it grows. Tender and tropical, this palm is best in Zone 10B and along the southwest coast of Florida up to Naples. FloridaThatchPalms are a versatile option for a small palm tree. They will grow in sun or shade, are drought and salt tolerant, and have a slender trunk. FloridaThatchPalm also known as Green ThatchPalm,Thrinax radiata, grows up to 30 ft. in frost free areas. The Floridathatch offers an attractive appearance with its slender trunk and dense canopy of radiating, fan-shaped leaves. It does best in full sun but can still grow well in partial shade. Maintenance The FloridaThatchPalm is a low-maintenance palm tree that requires only occasional pruning and watering to keep it healthy and looking its best. Comments: FloridaThatchPalm is an endangered species, found in the wild in the extreme southern peninsula and in Keys hammocks. ThatchPalms Needs & Care. Soil Requirements. The Floridathatchpalm, as well as the other Thatchpalm varieties, thrive in well-draining soils that are rich in organic matter. Common Name: FloridaThatchPalm (other common names: Thrinax Species, Broad ThatchPalm, Sea ThatchPalm, Silk-Top ThatchPalm). Floridathatchpalm is a relatively low-maintenance tropical palm. It thrives in well-draining soil and requires ample sunlight for optimal growth.