Nutricote is a slow release fertilizer that is heat and water activated when the ground temperature reaches 70 degrees. We use the 9 month formula that continues to fertilize throughout the summer and the fall. We then do not have to fertilize again (except for Milorganite and Epsom salts in the late summer) until the next spring. The other fertilizers give the daylilies the special kick needed in spring and then the Nutricote kicks in by the time the daylilies are ready to bloom. Nutricote will not burn the daylilies, so we do not have to worry about applying too much. Many of the Florida hybridizers use it.