How to Prune spotted deadnettle?
After flowering, plants can be cut back to encourage fresh foliage cover

spotted deadnettle · Lamium maculatum
Also known as: devil's clover; devil's nettle; double tongue; St Vincent's nettle; variegated deadnettle
Best grown in moist but well-drained soil in a sheltered position in deep or partial shade
After flowering, plants can be cut back to encourage fresh foliage cover