Cup-and-Saucer Vine
Cobaea scandens
vineverifiedReviewed by the GreenScout Team
A vigorous perennial climber (often grown as an annual) featuring distinctive bell-shaped flowers that emerge green and mature to purple, surrounded by a large leaf-like calyx resembling a saucer. This vine can reach 20+ feet in a single season with the right conditions and is excellent for pergolas and tall trellises. The flowers are delightfully fragrant and attract hummingbirds and pollinators.
Common Problems
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Care Guide
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Light
Full sun to partial shade; prefers 6–8 hours of direct sunlight for best flowering
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Water
Keep soil consistently moist during growing season but not waterlogged; reduce watering in winter for perennial specimens
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Soil
Rich, well-draining soil with good organic content; prefers slightly acidic pH (6.0–7.0)
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Fertiliser
Feed monthly during growing season with balanced fertilizer or one higher in phosphorus to encourage flowering
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Temperature
Warm-season grower; thrives in 65–75°F (18–24°C); frost-tender, dies back or perishes below 50°F (10°C)
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Humidity
Moderate to high humidity preferred; mist foliage occasionally in dry conditions
Toxicity
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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.
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