Hardy to Zone 10, Athena Blue requires very high light to bloom. It will grow to 16-20 inches tall. Finishing time for 4-inch containers is eight to nine weeks and 13 to 16 weeks for 10- to 12-inch containers. Maintain temperatures between 70-75° F during the day and 65-72° F at night. Pinch once at transplant; no growth regulators should be needed.