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points by everforward 4 days ago | 0 comments

I wonder if you could make it work vertically. It might ease the geometric challenges.

Naively, spraying targeted roundup from above or cutting a circle around the stem to kill roots kind of thing.

Roundup is gross anywhere even in small amounts. If water and energy can be provided similarly to stringman, a heating element to deliver a small payload of boiling water usually suffices.