Gwen from San Antonio, Tx writes
Bayer Systemic 3-in-1 did not have an impact on my Dahlia beds for killing the weavel/worms that are attacking the Dahlias. I have used the systemic, dusted with Delta dust several times, used Malathion spray. Please advise. I'm at my wits end and have over 20 new Dahlia plants that are slowly being eaten to their demise.
Bonide Systemic Granules Insect Control is not labeled for any type of worm. We recommend contacting Your Local Cooperative Extension Office and speaking with the Master Gardener to see what is recommended to treat these types of worms in your area.
Answer last updated on: 07/02/2013