I use Stachys byzantina (Lamb’s Ears) a great deal in full sun as a ground cover. The best variety by far is BIG EARS. This variety almost always fails to bloom (which usually causes clumps to crash) and manages to keep her fuzzy grey good looks through the summer. Heat and humidity challenge this plant, but just look: in the first photo taken today (ABOVE) you see no blooms and great foliage. In the picture below, I have removed every damaged or discolored leaf and thinned the clump to provide some air circulation.
And now we are ready for July’s challenges. My neighbor’s clumps look miserable, despite the blooms. Settle for no Lamb’s Ears but Big Ears!