Tower Blue
China Aster Seed
Product ID: 3321
Peony-type blooms with excellent uniformity.
All the elegance and beauty of peonies and garden mums in an easy-to-grow annual. Deep silvery violet-colored blooms avg. 2–3" with 13–20 stems per plant. Tower features uniform bloom time and plant height across the series and mix. Also known as summer aster. Ht. 28–32". Avg. 14,200 seeds/oz. Packet: 50 seeds.
https://www.johnnyseeds.com/flowers/aster/tower-blue-china-aster-seed-3321.11.html
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DAYS TO GERMINATION: 10-14 days at 70-72°F (21-22°C)
SOWING: Transplant (recommended) - Sow 1/8" deep into 72-cell flats or preferred seedling container, 6-8 weeks before last frost. Heat and reduced daylength initiate flowering. Establish plantings early to avoid short stems. Direct seed - After your last frost date and when soil temperature is 65-70°F (18-21°C). Provide support. Row cover or insect netting helps prevent the spread of Aster Yellows Virus by leafhoppers. Pinching not required.
LIGHT PREFERENCE: Sun.
PLANT HEIGHT: Varies depending on variety.
PLANT SPACING: 6-12".
HARDINESS ZONES: Annual.
VASE LIFE: 7-10 days.
HARVEST: Fresh: Outside ray florets begin to open. Place immediately in water. Dried: When blooms are fully open.
SOIL REQUIREMENTS: Fertile, well-drained soil. pH: 5.5-7.5 preferred.
USES: Cut flowers, borders.
SCIENTIFIC NAME: Callistephus chinensis
SOWING: Transplant (recommended) - Sow 1/8" deep into 72-cell flats or preferred seedling container, 6-8 weeks before last frost. Heat and reduced daylength initiate flowering. Establish plantings early to avoid short stems. Direct seed - After your last frost date and when soil temperature is 65-70°F (18-21°C). Provide support. Row cover or insect netting helps prevent the spread of Aster Yellows Virus by leafhoppers. Pinching not required.
LIGHT PREFERENCE: Sun.
PLANT HEIGHT: Varies depending on variety.
PLANT SPACING: 6-12".
HARDINESS ZONES: Annual.
VASE LIFE: 7-10 days.
HARVEST: Fresh: Outside ray florets begin to open. Place immediately in water. Dried: When blooms are fully open.
SOIL REQUIREMENTS: Fertile, well-drained soil. pH: 5.5-7.5 preferred.
USES: Cut flowers, borders.
SCIENTIFIC NAME: Callistephus chinensis
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Quick Facts
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Latin Name
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Callistephus chinensis
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Days To Maturity
Average number of days from seeding date to harvest, within a specific crop group. If a transplanted crop: average number of days from transplant date. Not sure if crop is direct-seeded or transplanted? Check the Growing Information box for details. If crop can be both direct-seeded or transplanted, days to maturity refers to direct seeding. Days to maturity for all flowers and herbs is calculated from seeding date. -
110 - 120 Days
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Life Cycle
Plants can be Annuals (single growing season), Perennials (grow year after year), Tender Perennials (grow year after year in warmer climates; and in some cases when given special protection in colder climates), or Biennials (require two years to mature). -
Annual
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Hybrid Status
Hybrid: The offspring of a cross between two or more distinct parent lines, usually of same species, and selected for improved traits.
Open-pollinated: A non-hybrid variety that can reproduce itself in kind, demonstrating relatively stable traits from one generation to the next. -
Open Pollinated
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Product Features
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Use for Cut Flowers and Bouquets
- Variety good for fresh cut-flower displays.
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