How to prune agastache 'blue fortune'

Deadhead through summer to extend flowering; cut back to basal growth in early spring. Cut spent flower spikes back by half to a pair of leaves to encourage reblooming. Leave stems standing through winter. In early spring, cut all old stems to 3–4 inches above ground as fresh growth begins at the base. Avoid cutting back in autumn in cold climates.

Regular deadheading through summer; hard cut-back once annually in early spring. Agastache 'Blue Fortune' benefits from deadheading to extend its long summer bloom. Cutting spent spikes back by about half encourages a second flush. In autumn, leave the stems standing — seedheads feed birds and the hollow stems provide overwinter insect habitat. Cut the whole plant back to fresh basal growth in early spring before new shoots emerge.

Cut spent flower spikes back by half to a pair of leaves to encourage reblooming. Leave stems standing through winter. In early spring, cut all old stems to 3–4 inches above ground as fresh growth begins at the base. Avoid cutting back in autumn in cold climates.