Ribbon Series

Family: Asteraceae Flowering annual

A ribbon of color in miniature—Ribbon Series Dwarf Double Aster blooms with densely layered, petal-packed rosettes that glow in the garden like satin confetti.

Expect a crisp, velvety texture and a lively range of shades that hold their form beautifully as the plants mature over about 70 days. Ideal for cut-flower displays and long-lasting bouquets, this compact annual brings instant, showy color to borders and sunny containers alike.

Light: Full SunMaturity: 70 DaysHabit: Bush

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Mar 21st
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jul 4th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Bush
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	70
Min Soil Temp (°F)	50
Min Night Temp (°F)	35
Harden Off (days)	5

Culinary Notes

Chef's Note

Even though is_edible is marked true, aster (Callistephus/asteraceae) isn’t a mainstream edible flower, and flavor/texture are notoriously inconsistent by variety and growing conditions. If you don’t have a trusted culinary source for this exact cultivar, treat it as a decorative garnish only and keep portions tiny.

Best Uses

Edible-flower garnish only if you can verify the specific variety is intended for eating and is free of pesticide/chemicals
Low-risk use: very sparingly on plated salads or desserts for color, not as a primary flavor

Flavor Profile

Not reliably culinary—asters are generally not treated as an edible ingredient Petals are typically mild or variable in flavor; texture use is uncertain

Frequently Asked Questions

What pest or disease is most common on Callistephus chinensis (aster-type annuals) and how do I manage it?

Watch for powdery mildew and gray mold (Botrytis), which show up as white powdery patches on leaves or gray/brown spotting when air stays humid. Improve airflow with wider spacing, water at the soil line in the morning (not on foliage), and remove infected leaves early. If it keeps recurring, spray a labeled fungicide for powdery mildew/Botrytis on asters, following the label intervals.

How often should I water Callistephus chinensis during the main growing phase?

During active growth and until buds form, keep the top 1–2 inches of soil evenly moist but not soggy—typically about 1 inch of water per week, adjusted for heat and wind. Water deeply when the soil surface starts to dry, because consistently wet soil encourages Botrytis and root issues. Avoid frequent light misting that wets leaves, since this raises disease risk.

How can I tell when my Ribbon Series Callistephus chinensis is ready to harvest?

Harvest when the flower heads have fully expanded and the ray florets (the “petals”) look crisp and brightly colored, with the center fully developed—not still tight and button-like. For best vase life, cut in the morning after dew dries, and use clean, sharp shears to remove stems just above a leaf node. If you’re aiming for continuous bloom, keep cutting spent heads promptly so new buds keep forming toward the end of the 70-day season.