Large Bindweed (Calystegia silvatica)

Large Bindweed

Calystegia silvatica

Twining stems climb with delicate trumpet blooms, a wild garden wanderer. Perennial climbing vine; common name: hedge bindweed.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; full sun encourages maximum flowering, while partial shade is tolerated in hot climates
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Watering Water deeply when the top 2 cm of soil is dry; avoid overwatering to prevent root rot in poorly drained soil
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Temperature Hardy to -15°C; tolerates mild summer heat up to 30°C with adequate moisture
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Characteristics

  • Leaf: Arrow-shaped glossy green leaves, 5–15 cm long with pointed basal lobes
  • Flower: Trumpet-shaped white or pale pink blooms, 4–7 cm diameter, faintly fragrant
  • Stem: Slender twining herbaceous stems that cling to nearby supports for growth
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Care Guide

Watering

Keep soil consistently moist during active growth periods

Fertilization

Diluted balanced liquid feed once monthly. Discontinue fertilization in autumn to support dormancy

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench to promote healthy flowering
Pruning
  • Trim back overgrown stems in late winter to control spread and encourage compact growth
  • Remove dead or yellowing foliage in early spring to improve airflow
  • Cut back climbing stems that encroach on other garden plants to maintain garden boundaries
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No documented toxicity to cats per ASPCA

Humans: No documented toxicity to humans per ASPCA and horticultural authorities

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental climbing vine; may be considered invasive in managed garden settings due to rapid growth