Spring is a good time to help you avoid pesticide spills. This article provides tips on how to clean out your pesticide storage area and safely dispose of pesticide waste.
Spring provides a great opportunity to kill insects that winter in vulnerable stages on leafless twigs, or on last year’s hardened off evergreen leaves or needles. The absence of tender leaf tissue makes it possible to use higher concentrations of oil that can kill insects without harming the plant. Dormant oil applications can have the added advantage of protecting beneficial insects and pollinators that are not active on these plants during the dormant season. What is a Dormant oil application and how does it kill insects? Oil products that can be applied in the dormant season contain between 97 to 98.8% paraffinic oil plus a surfactant. Products that are 98.8 % pure are called summer superior oils and can be applied at a 4% rate in the dormant season. Whereas those products that are 97-98% pure are called dormant oils. These are applied at a 2% rate in the dormant[Read More…]
Although winter weather came late this year, when it finally arrived at the end of December, it was fiercely cold with temperatures dipping well below 0 ˚ F. Most Indiana insects can survive these temperatures. One serious defoliator, the evergreen bagworm may have been killed by the cold weather. What are bagworms? Bagworms, Thyridopteryx ephemeraeformis (Haworth) are caterpillars that can strip the leaves from a wide variety of trees and shrubs. Evergreen shrubs, like juniper, red cedar, falsecypress, spruce, arborvitae, fir and pines can be killed when they lose more than half of their leaves to this pest. Although deciduous trees like maples, elms, birch, crabapples, willows and poplars are more likely to survive when they lose their leaves, affected trees are unsightly and repeated defoliation is likely to kill these trees. Bagworms get their name from their habit of living inside a silk bag that they cover with bits[Read More…]