Lobelia
Lobelia erinus
flowerLobelia is a tender annual with tiny delicate flowers in blue, purple, pink, or white that bloom abundantly throughout the season. Its cascading or mounding habit makes it ideal for hanging baskets, containers, and borders. The flowers attract pollinators and create striking color displays even in partial shade.
Common Problems
Select the problem your Lobelia is experiencing to get a treatment guide.
Care Guide
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Light
Partial shade to full sun (3–6 hours sun daily). In hot climates, afternoon shade prevents stress and extends flowering.
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Water
Keep soil consistently moist but not waterlogged. Regular watering is essential; avoid drying out completely. Reduce watering in winter dormancy.
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Soil
Rich, well-draining potting mix or garden soil amended with organic matter. pH 6.0–7.0. Good drainage is critical to prevent root rot.
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Fertiliser
Feed every 2–4 weeks with balanced liquid fertilizer during growing season. Avoid excessive nitrogen which promotes foliage over flowers.
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Temperature
Prefers 60–75°F (15–24°C). Tender annual; frost-sensitive. Dislikes prolonged heat above 80°F (27°C).
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Humidity
Moderate to high humidity preferred. Mist foliage occasionally if air is very dry.
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Lobelia is non-toxic to cats, dogs, 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.