Aster novi-belgii (New York Aster) is a classic fall-blooming perennial that finishes the season strong with masses of starry, purple daisy flowers. You will appreciate its upright habit and long-lasting color in late summer through autumn, when many other perennials are winding down.

Plant it where it can get full sun to part shade; more sun usually means sturdier stems and heavier bloom. Give it average to moist, well-drained soil and regular water during dry spells, especially while it is getting established. Good spacing and air circulation help reduce the risk of powdery mildew, a common aster issue in humid or crowded sites.

At a mature size near 12-18 inches tall, this aster is easy to tuck into the front of a border, a pollinator planting, or a naturalized edge. Its nectar-rich flowers draw in bees and butterflies for late-season forage, and the seedheads can provide interest as the plant finishes the year.

For a fuller look, you can pinch or lightly trim stems in early summer, then stop trimming by midsummer so buds can form. Cut back old stems after flowering or leave some standing for winter texture, then tidy up in early spring as new growth begins.

Specifications

• Cold hardiness zone: 4-8 (-30 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Growth rate: Moderate
• Mature height: 12-18"
• Spread: 12-24"
• Tolerant of: Deer

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