Unlike some years, some recent moisture has resulted in sericea lespedeza blooming in many areas. Should you spray it?
If you are in a dry area and sericea is not actively blooming, you’re probably better of waiting until next year. If it’s growing well and blooming, the late-bud stage through the bloom stage is a good time to spray sericea lespedeza. Broadcast or aerial sprays are the most effective, but spot-spraying can be done with smaller areas now.
Make sure you are using a product that can do you some good at this stage, though. Remedy Ultra and PastureGard can be effective during the early to full bloom stage, but products containing metsulfuron (such as Escort XP, Cimarron Plus, Chaparral) are often more effective as flowering ends and seed pods appear and begin to fill. Make sure the product label you choose allows spot spraying and make sure and follow the label recommended rates and other precautions.
Sericea plants can be killed until frost, but if pod fill has begun, viable seed will still be produced. Grasslands with sericea lespedeza infestations should not be grazed or hayed after the sericea has gone to seed. This will only serve to spread the seed to other areas. If at all possible, keep sericea lespedeza from going to seed.
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