Ageratum
Ageratum houstonianum
flowerAgeratum is a tender annual with soft, fluffy flower clusters in shades of blue, purple, pink, or white that bloom continuously from summer through fall frost. Compact varieties grow 6–12 inches tall, making them ideal for edging and containers, while taller types reach 18–24 inches. This easy-to-grow plant attracts pollinators and thrives in warm, sunny locations with consistent moisture.
Common Problems
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Care Guide
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Light
Full sun to light shade (at least 4–6 hours of direct sun); blooms best in full sun
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Water
Keep soil consistently moist but not waterlogged; water when top inch of soil is dry
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Soil
Well-draining, fertile soil rich in organic matter; pH 5.5–7.5
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Fertiliser
Light monthly feeding with balanced fertilizer; avoid excessive nitrogen which reduces flowering
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Temperature
Warm-loving; 70–85°F ideal; frost-sensitive annual
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Humidity
Moderate to high; prefers 50–70% humidity
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Non-toxic; safe for all pets and children
Common Diseases
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.