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How to Grow Morning Glory

Ipomoea purpurea

Half Hardy Warm Season Continuous Harvest

When to Start

Sow indoors 4 weeks before last frost, or direct sow outdoors after frost risk has passed and soil reaches 15°C.

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Growth Stages

Sow seeds
Germination ~10d
Flowering ~90d

Approximate days from start

Care Essentials

  • Feed sparingly — a light balanced liquid feed monthly once established. Too much nitrogen produces lush foliage at the expense of flowers.
  • Morning glory is a vigorous annual climber that produces trumpet-shaped flowers from midsummer until frost. Each flower lasts only one day, opening in the morning and fading by afternoon, but plants produce new blooms daily. Seeds benefit from soaking overnight or nicking the hard coat before sowing. Needs warm soil to germinate — do not sow too early.

Companion Planting

Growing Conditions

Min. soil temperature: 15°C+
Germination temperature: 18–30°C

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Spacing & Planting

Plant spacing 30 cm
Row spacing 45 cm
Sow depth 1 cm
Mature height 300 cm
Mature spread 60 cm

Space 30 cm apart along a trellis, obelisk, or fence. Provide vertical support — morning glory climbs 2-3m by twining and needs something to grip.

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Care Guide

Feeding
Feed sparingly — a light balanced liquid feed monthly once established. Too much nitrogen produces lush foliage at the expense of flowers.
Watch for
  • Aphids on young growth
  • Red spider mite in hot dry weather
  • Slugs on seedlings
  • Self-seeding (can become invasive in warm climates)

Growing Conditions

Min. soil temperature15°C
Germination temperature18–30°C
Base growth temperature10°C
Photoperiod sensitivityshort day

Frequently Asked Questions

How far apart should I plant Morning Glory?
Plant Morning Glory 30cm apart with 45cm between rows.
When does Morning Glory flower?
Morning Glory typically flowers approximately 60 days after transplanting.
Is Morning Glory frost hardy?
Morning Glory is classified as Half Hardy.

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