How to Trim Limemound Spireas

Inspect the plants in the later winter or early spring removing any dead, broken or damaged branches and any loose foliage that has collected in and amongst the branches or over the crown of the plant. Place cuts into healthy live tissue above a lateral shoot or leaf node or all the way down to the crown, if needed. This makes way for new growth.

Rejuvenate individual plants that become badly overgrown, damaged or misshapen, by renewal pruning to the ground. Sever all of the stems down to the crown of the plant just above the soil line with pruning shears and clear away all of the cuttings. This will spur a flush new growth that restores the natural form of the shrub.

Mow down large swathes of Limemound grown as a ground cover once per year or as needed to control the growth. Set your mower height as desired but high enough to clear the crowns of the plants unless you want drastic removal and slower regeneration.

Induce a second flush of flowering by shearing off the first set of spent flowers in the early to mid summer. Remove the flowering branch tips to above a healthy lateral with individual cuts or simply shear off the flower heads all at once. New growth will rapidly cover the cuts.