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Photos are representative and may not match your specific variety.
Tall Blue Planet
FlowerAgeratum houstonianum
- Partial sun
- Zones 2–11
- 80 days to maturity
- Flowers
- 12" spacing
- High water
- Annual
Overview
Tight blue flower clusters. Use as a classic filler for mixed bouquets or plant to attract bees and butterflies to your garden. Ageratum is also known as flossflower or blue mink.
Planting
Start indoors 6-8 weeks before last frost, transplant after frost danger
Growing
Sun: partial. Water: high. Soil: Well-drained soil, tolerates average fertility. Space plants 12" apart. Germination: 7-14 days.
Pests & diseases
Common pests: Whiteflies, spider mites, aphids. Common diseases: Powdery mildew, root rot in wet conditions.