godan verb (-gu)
pull up by the roots; uproot
Rare, possibly dialectal or archaic verb for pulling something out by the roots. In modern standard Japanese, 引き抜く or 根こそぎにする are far more common.
古い方言では、草をこぐと言うことがあるらしい。
In an old dialect, they apparently say 草をこぐ for pulling up weeds.
Standard modern verb for pulling something out, including uprooting plants. 扱ぐ is a rare, possibly dialectal synonym.
The origin is uncertain. The kanji 扱 is used for its meaning 'handle, treat', but the reading こぐ is not standard for this character and may reflect a dialectal or archaic usage.