Warm and uncovered
75–80°F, light helps.
Flower SeedsHSC-AGE-001-PKT
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Ageratum houstonianum
80 - 100Days to maturity
A seed worth growing
Tall Blue Planet (F1) Ageratum Seed
About this variety
A tall blue ageratum for cutting.
Tall Blue Planet has tight blue flower clusters on tall, upright, sturdy stems.
Use it as a classic filler in mixed bouquets, or plant it to bring bees and butterflies to the garden. Also called flossflower.
Flowers about 80–100 days from sowing, on plants 24–30" tall. F1 hybrid.
Specs
- Packet: 100 seeds
- Average 168,000 seeds per oz.
- Plant height: 24–30"
In stock — Packet
Current price
$7.30
Original price
Sale price
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Know before you sow
Quick Facts
Growing times vary with weather, soil and local conditions.
Growing guide
From seed to harvestPlant out after frost
9–12" apart.
Slightly acid soil
pH 5.0–6.0.
Cut three-quarters open
For the vase.
Growing Information
Days to germination
About 7–10 days at 24–27°C (75–80°F).
Starting indoors
Recommended. Sow 6–8 weeks ahead of transplanting, uncovered, since light helps; water from below or mist. Move seedlings to cell packs or pots at the first true leaves. Harden off and plant out after frost. No pinching or staking needed.
Direct sowing
Not recommended.
Plant spacing
9–12".
Soil
Fertile, free-draining soil at pH 5.0–6.0.
Light
Full sun; part shade where summers are hot.
Harvest
For fresh use, cut when spikes are three-quarters open; for drying, when fully open, then hang. Color often fades as it air-dries.
Uses
Fresh and dried flowers; backs of beds, borders and mass plantings. Also called flossflower.
Hardiness
Annual.
Packet
100 seeds.
Seeds per oz.
About 168,000 on average.
Satisfaction Guarantee
We want every packet you buy from Hensley’s Seed Co. to grow well for you.
If anything you order from us doesn’t meet your expectations, just let us know and we’ll replace it or refund what you paid.
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