OP 30-40 days. 30” to 5 ft. Warm weather green grows slowly in cooler weather and as it warms, White Leaf Amaranth grows rapidly. Round, tender, light green leaves and stems contain more iron than Western spinach. At maturity plants can be 5 ft. tall. At this stage allow the plant to go to seed, harvest and prepare as you would quinoa or sprinkle over your salad or in a smoothie. White Leaf Amaranth tolerates hot, dry, moist climates and in temperatures over 70° it grows fast and produces abundantly. Plant late Spring to early Summer. Now you can enjoy greens all through summer and into fall from one planting.