Yes they grow pretty fast, plant looks like lettuce when it first starts coming up. Plant in partial sun, full sun will burn the plants, water after sun sets about dusk, water the ground around the plant, if you spray water on the plant in the full sun, heat of the day it will burn the plant. They grow about 3 to 3 and a half foot tall, most have 8 to 10 blooms on each plant so they produce thousands of seeds. My favorite flower by far.