A Great Perennial Flower for Iowa Gardens & Late-Season Favorite for Attracting Pollinators
Bring borders back to life when summer fades with Aster, a fall-blooming perennial that explodes with star-shaped flowers in purple, blue, pink, or white. From cottage gardens to borders, Asters deliver weeks of color just when gardens need it most—and they’re a magnet for butterflies and bees.
Why Iowa Gardeners Choose Aster
- Late-season blooms from late summer into fall; extends the show through frost
- Thrives in full sun to part sun with good air circulation
- Pollinator powerhouse—fuel for migrating butterflies
- Often deer resistant; great cut flowers
- Upright habit that tucks easily into borders and meadow-style plantings
Planting & Spacing Instructions for Aster
- Best time to plant: Spring or early fall in workable, well-drained soil
- Soil: Average to moderately fertile; amend heavy clay with compost
- Spacing/size: Most varieties grow 12–48″ tall and 18–24″ wide; space for airflow to limit mildew
- Hardiness: Typically USDA Zones 3–8 (varies by variety)
Aster Care Made Simple
- Water: Keep evenly moist the first season; water during dry spells
- Pinch & stake: Pinch back tips in early summer for bushier, shorter plants and stronger stems; stake taller types if needed
- Deadhead: Remove spent blooms to tidy; divide every 2–3 years to maintain vigor
- Health: Morning sun and airflow help prevent powdery mildew
Other Plants that Partner Well with Aster
Pair Asters with sedum, echinacea, rudbeckia, goldenrod, and ornamental grasses for layered fall color and texture.
Shop for Aster and Other Perennials at Holub Greenhouses of Ames
Find locally selected, fall-blooming Asters ready for borders, pollinator patches, and containers at Holub Greenhouses. Our team will match color, height, and bloom time to your space—so your garden finishes the season strong.