How to prune dahlia 'thomas edison'

Pinch in late spring; deadhead through summer and autumn. Pinch out the central stem above the third leaf pair when plants reach about 40 cm. For exhibition-size blooms, disbud by removing side buds, leaving only the terminal bud per stem. Deadhead by cutting back to the next healthy leaf joint.

Pinch once; deadhead every 7–10 days during bloom. Dahlia 'Thomas Edison', a large decorative dahlia, benefits from pinching once after planting to encourage branching and disbudding for larger individual blooms. Deadhead spent flowers regularly to maintain flowering into autumn. Cut all growth to ground level after the first hard frost, then lift and store tubers if winters are cold.

Pinch out the central stem above the third leaf pair when plants reach about 40 cm. For exhibition-size blooms, disbud by removing side buds, leaving only the terminal bud per stem. Deadhead by cutting back to the next healthy leaf joint.