Chemical-free Quackgrass Control
It seems to be everywhere – your garden, lawn and cracks in the sidewalk. Quackgrass is that aggressive perennial grass that can quickly take over lawns and gardens.
Quackgrass spreads by a long white root-like rhizome. Every piece of that rhizome that breaks off and lands in the soil can start a new plant. This makes control difficult. Cultivation with a hoe or tiller breaks up the rhizome resulting in more plants.
Twice monthly cultivation for at least one, preferably two, growing seasons can control this weed. You must be diligent or you will end up with more not less quackgrass.
Solarization is also an option. Remove your desirable plants. Check for and remove any quackgrass that may have infiltrated these plants. Edge the bed and cover with clear plastic for 6 to 8 weeks during the hottest part of the growing season. This is usually enough to cook the quackgrass and other weeds.
A bit more information: Some of the new eco-friendly products use plant or soap based products to burn the tops of this and other plants. Unfortunately it will not kill the roots and rhizomes. Repeated use can eventually starve and kill the plant. But you must be more persistent than this weed. I find this strategy is fairly effective for controlling quack and other weeds in my walks and pavers.