Can I Compost Couch Grass?

No, couch grass should not be composted.

Couch grass (Elymus repens) is one of those weeds that is unlikely to be killed by the composting process: it will keep growing in the compost heap. Its creeping rhizomes might cause both a tangle in your heap/bin and spread the annoying plant around your garden when you spread the compost.

Best to avoid.

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