1. Chemical control
This is a common method to control the spread of Himalayan Balsam. Chemical control involves the application of specialised weed-killing chemicals to Himalayan Balsam plants, and often needs to be consistent over a number of seasons to be totally effective. Due to legislation around spraying chemicals in the wild and near bodies of water, it is safest and most effective to hire professionals that can adhere to laws and best practice.
2. Manual control
Pulling or cutting Himalayan Balsam plants before they flower and set seed is the main form of manual control. Conservation authorities sometimes partake in “Balsam bashing” parties, but these must be undertaken with extreme caution, as studies have shown that this can actually help the plant to spread.