Bring vibrant late-season color to your garden with Giants of California Aster Seeds. This heirloom perennial produces towering blooms in stunning shades of purple, pink, and lavender, perfect for borders, cut flowers, or attracting pollinators. Easy to grow and maintain, these asters thrive in full sun to partial shade and adapt to a variety of soil types. Enjoy a long-lasting display from late summer into fall, adding a burst of color to your garden while supporting bees and butterflies.
Plant Profile:
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Botanical Name: Callistephus giganteus
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Type: Perennial
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Bloom Color: Purple, Pink, Lavender
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Bloom Time: Late Summer – Fall
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Height: 36–48 inches
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Spacing: 12–18 inches
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Sunlight: Full Sun – Partial Shade
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Soil: Well-drained, average fertility
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Zones: 3–9
Why Grow Giants of California Aster Seeds?
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Long Blooming: Extends color in your garden when many other flowers fade
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Pollinator Friendly: Attracts bees, butterflies, and beneficial insects
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Versatile: Perfect for borders, cut flowers, or container planting
Growing Tips:
- Start indoors 6–8 weeks before the last frost or direct sow after frost passes
- Sow seeds lightly on the surface and press gently into moist soil
- Keep soil evenly moist until germination (10–20 days)
- Thin seedlings to allow proper spacing for strong growth
- Pinch back early to encourage bushier plants and more blooms
❓ Frequently Asked Questions (FAQ)
When do Giants of California Aster seeds bloom?
Late summer through fall, providing long-lasting garden color.
Can these asters attract pollinators?
Yes! They are excellent for attracting bees, butterflies, and beneficial insects.
What soil and sunlight do they prefer?
Well-drained soil, full sun to partial shade. Adaptable to most garden soils.
How tall do the plants grow?
Typically 36–48 inches tall, making them perfect for dramatic garden displays.
How should I start the seeds?
Start indoors 6–8 weeks before the last frost or direct sow outdoors after frost.
Where to Buy?
At Seed World, we offer fresh Giants of California Aster seeds with fast U.S. shipping.
