How to prune cylindric blazing star

Late summer after bloom for deadheading; late autumn or early spring for full cut-back. Cut spent flower stems at the base with clean shears. Reduce all stems to 2–4 cm above the corm in autumn or spring. Divide crowded clumps in early spring, replanting offsets at the same depth.

Annually (cut-back); deadheading optional during and after bloom. Cylindric Blazing Star is a compact native species that needs little pruning. Remove spent flower stems after late-summer bloom to prevent excessive seeding or leave them for finches. Cut all stems to near ground level in late autumn or early spring. Divide congested clumps every 3–4 years to keep plants vigorous.

Cut spent flower stems at the base with clean shears. Reduce all stems to 2–4 cm above the corm in autumn or spring. Divide crowded clumps in early spring, replanting offsets at the same depth.