Easter 2016 falls on an early date, March 27th. Bringing a lily crop in on time will be a special challenge and some time-saving choices will need to be made along the way.
During this recent summer drought, grasshoppers may have been moving into your container grown annuals such as ornamental millet or container grown perennials. In the fall, you will mainly see adults feeding. Hot dry summers and warm autumns tend to be favorable to grasshoppers.
It is best to clean greenhouses now rather than to waiting until just before you start your spring production. This helps eliminate over-wintering sites for pests, in unheated greenhouses, especially if the winter is unseasonably warm. Remove all leftover plants, weeds and debris and clean the floor of spilled soil, and organic matter. Check areas around furnaces and alongside-walls and remove those small weeds that are often overlooked. Repair tears in worn weed barriers.
It is important to clean up two-spotted mite infestations prior to fall to minimize infestations next spring.
Two-spotted spider mites (TSSM) multiply quickly during the hot, dry days of summer and are common on greenhouse tomatoes, herbaceous perennials, weeds and many other hosts. It takes about 28 days to develop from egg to adult at cool temperatures (50-68°F) but only about 8 days at 77-95°F.
Production areas with black fiber cloth were hot, hot, hot this week. Garden mums, flowering cabbage and kale may exhibit signs of wilting during extended periods of 90 plus degree temperatures. The solution may not be as easy as turning on the irrigation. Plants wilt when the soil is dry, but wilting will also occur in hot weather which may cause plants to be stressed, or if the roots are damage from a root disease such as Pythium, even if the soil is saturated with water. When the roots stop functioning the plants will show signs of stress by wilting.