Weed Control for Irises
- 1). Remove weeds from the garden before planting iris rhizomes.
- 2). Avoid using mulch, ground covers or weed barriers. Iris rhizomes need to be exposed to the sun to keep them healthy and prevent them from rotting.
- 3). Use a hand cultivator to cut off the shoots of young emerging weeds. Use a hand trowel to dig up bigger weeds. Try to get the whole weed since a new weed will sprout from even a tiny bit of left-behind root.
- 4). Weed in the spring before plants go to seed to discourage new ones from sprouting.