How to Prune cigar flower?
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. If needed, Prune in spring.

cigar flower · Cuphea ignea
Also known as: cigar plant; firecracker plant; Mexican cigar flower; red-white-and-blue flower; vegetable firecracker
Best grown in well-drained soil in a sheltered site in sun or partial shade but shade from hot sun. Alternatively grow in a pot under glass or as a houseplant
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. If needed, Prune in spring.