0.5g (approx. 10 seeds). Perennial palm grows well indoors up to 3m (118in.) tall. Large, fan-shaped leaves, 15-45cm (6-18in.) long. Sow in early spring, seeds germinate at a temperature of 20-30 C (68-86 F) in 45-60 days. Use for large rooms, greenhouses and winter garden. (Washingtonia fulifera).