How to prune jerusalem artichoke 'red fuseau'

Cut stems by half in mid-summer if over 2 m tall to reduce wind-rock; cut to ground level in autumn after frost blackens the foliage. In mid-summer, cut stems back to about 1–1.2 m with loppers or a sharp spade if they are flopping. In autumn, cut all stems to 10–15 cm above ground once the foliage dies. Leave stubs briefly to mark tuber positions, then remove them before digging.

Once in mid-summer if needed for height control; once in autumn after die-back. Jerusalem artichoke 'Red Fuseau' grows tall and benefits from cutting stems back in summer to reduce wind-rock and occasionally improve tuber yield. Cut plants down to ground level each autumn after foliage yellows and dies back — this is standard practice, not optional pruning. Stems are woody and should be composted, not left to rot in place.

In mid-summer, cut stems back to about 1–1.2 m with loppers or a sharp spade if they are flopping. In autumn, cut all stems to 10–15 cm above ground once the foliage dies. Leave stubs briefly to mark tuber positions, then remove them before digging.