What is the yellow flower that is in lots of pastures this spring that hasn’t been before according to several farmers and how to get rid of it?
The Gardener’s Answer
Hi, Linda: It is difficult to say without a picture. My initial thought is wild mustard, also known as field mustard. This summer annual produces bright yellow flower with four petals. My second guess is butterweed which belongs to the aster family and also produces bright yellow flowers. Both are widespread weeds that are commonly found in open fields and where grain crops are grown. Once established, these competitive weeds can be difficult to control. Tilling and crop rotation can help reduce numbers. There are herbicides labeled for these weeds but proper identification is needed before any application. Take a sample to your County Cooperative Extension Service for the horticulture/agriculture agent(s) to identify. They will also be able to give you treatment options.
Kentucky Living-Ask the Gardener