Days™ Blue Aster

Days™ Blue is a blue color variety in Syngenta’s Days™ series of New York asters. The breeder identifies product 70018147 as Aster novi-belgii, a medium-vigor plant with a fall garden display and a 16–18 inch height by 20–24 inch spread ([Syngenta Flowers](https://www.syngentaflowers.com/ams/product/flower/70018147)). ## Form and Placement Syngenta recommends this selection for hanging baskets and 1.25- or 3-quart containers. Its compact garden dimensions also suit sunny borders and grouped plantings where a blue fall accent is useful. The breeder marks the production crop as medium vigor. ## Growing Conditions Provide full sun. General New York aster guidance recommends moist, well-drained soil and good air circulation around foliage; those species-level practices complement the breeder’s cultivar-specific light and size information ([University of Illinois Extension](https://extension.illinois.edu/flowers/new-york-aster-michaelmus-daisy)). ## Maintenance Water container plants consistently while they are actively growing and flowering, and allow excess water to drain. Remove spent stems after the autumn display. If the plant is kept as a perennial in a landscape, divide established clumps every few years when they become crowded; use container size and local climate to guide spacing.