Blooms are heaviest and most prolific in late spring into summer but will continue sporadically until late summer and fall. The catmint in particular, responds well to being sheared after each wave of flowers to promote rebloom. Though in fall and lasting into winter, the scene-stealer is most certainly the Moorflamme purple moor grass with strongly upright flowering stems; it's particularly lovely when backlit if you can manage to place it with the sun behind.
Exposure: Afternoon Sun, Full Sun
Water Needs: Average, Low
Features: Drought Tolerant, Flower Fest, Fragrance, Attracts Pollinator
Focus: Hellstrip / Parking Strip, Saving Water
Seasons of Interest: Late Spring / Early Summer, Summer, Late Summer / Early Fall, Fall, Pleasing Seasonal Changes, Three Seasons of Interest
Maintenance Level: medium