How to prune nepeta racemosa 'blue wonder'

After first flowering flush (June–July); cut to ground in early spring. Shear the entire plant back by one-half to two-thirds with garden shears once the first flush fades. This encourages compact regrowth and a second wave of flowers.

Shear once mid-season; cut to ground once annually in spring. Nepeta racemosa 'Blue Wonder' responds well to shearing after its first flush of blue flowers in early summer, producing a neat second flush. Cut the mound back by one-half to two-thirds once flowers fade. Leave old stems over winter for structural interest and some frost protection, then cut to the ground in early spring.

Shear the entire plant back by one-half to two-thirds with garden shears once the first flush fades. This encourages compact regrowth and a second wave of flowers.