How to Grow Red Hesperantha
Red Hesperantha
Hesperantha coccinea
flowerRed Hesperantha is a tender South African corm-forming perennial known for its striking red, star-shaped flowers that open in late afternoon and evening. It produces slender, grass-like foliage and blooms prolifically from late summer through fall. The fragrant flowers are popular for cutting and add vibrant color to late-season gardens.
When should you plant Red Hesperantha in your zone?
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Example Red Hesperantha timeline · Pittsburgh, PA (Zone 6b)
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Plant Red Hesperantha
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Red Hesperantha blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Red Hesperantha dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 8b-11; grow in containers in cooler climates and bring indoors in winter
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Dormancy & Planting
2-3 weeks until sproutingCorms are planted in spring after frost danger passes. They are small, round structures that appear inactive but contain stored energy.
Soak corms in lukewarm water for 1-2 hours before planting. Plant in well-draining soil and water lightly until growth emerges.
Vegetative Growth
4-6 weeksSlender, upright, grass-like foliage emerges and develops, reaching 12-24 inches tall depending on variety. Leaves are narrow and deep green.
Maintain consistent moisture. Apply balanced fertilizer every 3-4 weeks. Avoid overwatering which can cause corm rot.
Bud Formation & Flowering
6-10 weeksFlower spikes develop at the top of stems, with buds forming along the spike. Star-shaped red flowers open in late afternoon (typically 3-9 PM) and close by morning.
Continue regular watering and feeding. Deadhead spent flowers to encourage additional blooms. Flowers are fragrant in evening hours.
Extended Bloom Period
8-12 weeksPlant continues to produce successive flowers throughout late summer and fall, with blooming peaking in September-October in most regions.
Continue deadheading for prolonged flowering. Water consistently but allow soil to dry slightly between waterings. Reduce fertilizer as days shorten.
Dormancy Preparation
4-6 weeksAs temperatures cool and days shorten, flowering diminishes and foliage begins to decline. Corms prepare for winter dormancy.
Gradually reduce watering as growth slows. In frost-prone areas, lift corms after foliage dies back, dry them thoroughly, and store in cool, dry place until spring.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use insecticidal soap if infestation is severe. Increase humidity around plants.
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Remove affected flowers; use blue sticky traps for monitoring. Spray with neem oil or insecticidal soap if needed.
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Prevent by ensuring excellent drainage and avoiding overwatering. Remove affected corms immediately. Store corms in dry conditions with good air circulation.
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Hand-pick in early morning. Use copper tape barriers or slug bait around plants.
Uses
Ornamental flowers for arrangements
CulinaryThe fragrant red flowers are prized for cut flower arrangements and fresh bouquets, offering late-season color when many other plants have finished blooming. [source]
Evening fragrance in gardens
HouseholdRed Hesperantha releases its sweet fragrance in the evening hours, making it an excellent choice for near patios or sitting areas where you can enjoy the scent during twilight hours. [source]
Pollinator attraction
WildlifeThe flowers attract butterflies, moths (particularly evening-active species), and other pollinators, supporting late-season insect populations. [source]
Dried flowers for crafts
CraftFlowers can be dried and used in dried arrangements, pressed flower crafts, and botanical art projects. [source]
Harvest Tips
Cut flowers in late afternoon when they are opening or fully open. Place immediately in water with floral preservative. Flowers last 2-3 days in a vase. Cut stems at an angle and remove lower foliage. For longest vase life, change water daily.
Fun Facts
- 🌱 The name 'Hesperantha' comes from Greek words meaning 'evening flower,' referring to the flowers' habit of opening in late afternoon and closing by morning.
- 🌱 Red Hesperantha is native to South Africa and was historically called Schizostylis coccinea; it was reclassified in 2010 based on genetic studies.
- 🌱 The flowers are thermogenic, slightly warming their petals in the evening to attract night-active pollinators such as moths.
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