By John Brien, CCA, AgriGold regional agronomist
The Eastern Corn Belt is experiencing one of the warmest winters on record. Temperatures have consistently been 5-10 degrees Fahrenheit above normal for most of the winter months, with some locations recording 60+ degree temperatures in the month of February. The warm weather throughout the winter could lead to a lot of unwanted situations in 2012. One of the unintended situations caused by warmer than normal temperatures is the potential for high infestations of winter annuals.
Winter annuals are unique in that they grow during the cool times of the year when other annual weeds become dormant. The life cycle of winter annuals begin anytime between late summer and early spring. The newly sprouted weeds overwinter as small seedlings and then when the weather begins to warm in the spring they continue to grow, flower, put on seeds and then die. Winter annuals typically grow close to the ground for protection against cold winter days.