Cycas revoluta but will usually flush (or grow) several new leaves by spring. This plant has gained the Royal Horticultural Society's Award of Garden Merit (confirmed 2017). The pith contains edible starch, and is used for making sago. Before use, the starch must be carefully washed to leach out toxins contained in the pith. Extracting edible starch from the sago cycad requires special care due to the poisonous nature of cycads. Cycad sago is used for many of the same purposes as palm sago. Sago is extracted from the sago cycad by cutting the pith from the stem, root and seeds of
Castilla (plant) been extracted. The vernacular name is "Panama rubber tree" or "castilloa rubber". The pre-Columbian MesoAmericans used the latex of this plant to make a ball used in a ceremonial game. Rubber Castilla (plant) Castilla (sometimes incorrectly spelled "Castilloa") is a genus of 3 species of large trees in the flowering plant family Moraceae. The genus is native to Central and South America. This genus is named after Juan Diego del Castillo (d. 1793), a Spanish botanist who was a friend of Vicente Cervantes, who chose the name in his friend's honor. "Castilla" species are monoecious or dioecious trees up to