All of ingredients are blended into a precise formula that promotes healthy root growth so your plants perform to their maximum. Temperatures between 16 °C and 24 °C are best. ✦ The Kimberly Queen fern cannot tolerate freezing temperatures, so if you live in such areas, grow the plants indoors. Make a statement with Kimberly Queen Ferns in the style that best fits you and your home! Copyright © Gardenerdy & Buzzle.com, Inc.