Russian sage is taking over my garden. Can I use Roundup in new growths or will it kill main plant? Or how else can I control it?
Russian Sage Taking Over Garden
Certified GKH Gardening Expert
Before resorting to chemicals, try hand pulling as much as possible. Then you can pour boiling water on the remaining plants that are becoming 'weedy'. Be aware though that this will kill any plant the hot water also comes in contact with. If you still want to give Roundup a shot, simply use a shield of some kind (cardboard works well) to protect the main plant and spray the weed killer on the plants you want to get rid of.