Since strong negative DIFs can increase postharvest catastrophic leaf yellowing, zero DIF or morning temperature drop is better as some height control is realized with less chance of leaf yellowing later on. Dissect a few plants for evidence of flower initiation so leaf counting may begin. Now is the time to run the lowest temperature possible from a timing standpoint to increase flower bud count. In no case should you go below 55deg. 10 February 2 Space plants as soon as possible.
Lilies stretch when crowded.
You should have space as Valentines Day crops are going out. Watch excessively high day temperatures which will stretch plants. High average temperatures now are bad for bud count. 9 February 9 Adjust temperatures in relation to leaf counting and leaf unfolding rates. Keep a close watch for aphids and spot spray rigorously to eliminate them.