Aster Marie III™ Fall Aster

Marie III™ is a fall-flowering Aster selection associated with the cultivar denomination Yomarie the Third (USPP19017). [Perennials.com identifies Marie III with Yomarie III](https://www.perennials.com/plants/aster-marie-iii.html) and describes deep-pink flowers, while the [patent](https://patents.google.com/patent/USPP19017P2/en) names Yomarie the Third as an Aster hybrid and describes purple ray florets. ## Flowers and placement Use it in a sunny border or grouped planting for a mound of late-season color. Flower color is described as deep pink by Perennials.com and purple in the patent, so expect pink-to-purple tones. The patent describes a compact, mounded habit with green foliage and a natural mid-September flowering period. ## Siting and care Give the plant full sun and well-drained soil. The [University of Wisconsin Extension aster guide](https://hort.extension.wisc.edu/articles/asters/) recommends moist, well-drained soil and full sun or part shade for asters; provide air movement and avoid waterlogged roots. ## Maintenance Remove spent heads for a tidier finish and cut back old stems after flowering. Divide established clumps in spring when they become crowded.