Miss Manners should be sited in an area with full sun and slightly acidic soil. Full sun allows for the plant to have an abundance of flowers. The stems tend to flop in too much shade and rich soils; however, Miss Manners flops less than the straight species (Physostegia virginiana). The plant tends to grow to its optimum potential in a well-drained site.
As a member of the mint family, Miss Manners is not as aggressive as the straight species (Physostegia virginiana). To prevent it from becoming an aggressive spreader, remove the seed heads before they disperse.
You can also cut back the first flowers after bloom to allow for a second bloom to occur later in the season.