How to Grow Gaura
Oenothera lindheimeri
Gaura is a graceful, airy perennial that produces clouds of butterfly-like flowers from June to October. Plant in spring in full sun and very well-drained soil — it thrives in poor, gravelly ground and hates winter wet. Space about 45 cm apart. Leave the stems standing over winter to protect the crown, then cut back to 15 cm in early spring. Gaura is short-lived (three to five years) but self-seeds freely, so you rarely lose it once established. Avoid rich soil and overwatering.
Yearly Lifecycle
Care Essentials
Rarely needed. A light mulch of compost in spring is sufficient. Rich feeding produces floppy growth and fewer flowers.
Watch For
- Aphids on young shoots
- Root rot in wet winters
- Flea beetles on foliage
Companions
Lavender, Salvia, Grasses, Verbena bonariensis
Track your Gaura care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Full sun essential
Gaura needs full sun for the best flowering and sturdiest growth. In shade it becomes leggy and floppy with far fewer flowers.
💧 Watering
Very drought-tolerant, hates wet feet
Once established, gaura rarely needs watering thanks to its deep taproot. Overwatering and winter wet are the main killers. Only water during extreme drought in summer.
🌱 Fertilizing
Minimal feeding, lean soil preferred
Avoid rich feeding which produces floppy growth. A light compost mulch in spring is ample. Gaura flowers best in poor to average soil.
✂️ Pruning
Leave over winter, cut back in spring
Leave old stems standing through winter to protect the crown from frost. Cut back to 15 cm in early spring once new basal growth is visible. A Chelsea chop in late May produces bushier plants.
🍂 Mulching
Gravel mulch around the crown
Use gravel or grit mulch around the crown to improve drainage and protect from winter wet. Avoid organic mulch that holds moisture against the crown.
Growing Tips
Drainage is non-negotiable
Gaura has a deep taproot that rots in waterlogged soil. On heavy clay, plant on a mound of grit or grow in raised beds. A gravel mulch around the crown works wonders.
Leave stems for winter protection
The old stems insulate the crown from frost and wet. Resist the urge to tidy up in autumn — wait until new basal shoots appear in spring before cutting back.
Short-lived but self-sowing
Individual plants typically last three to five years. Let a few seed heads ripen at the end of the season and seedlings will appear the following spring, ensuring continuity.
Chelsea chop for bushier plants
Pinch or cut stems back by half in late May to produce a bushier, more compact plant that is less likely to flop. Flowering will be delayed by a couple of weeks but the display is often better.
Pests & Diseases
Pest Aphids
Identification: Clusters of green or black aphids on stem tips and developing buds; sticky honeydew
- Blast off with a strong jet of water
- Encourage ladybirds, lacewings, and hoverflies
- Spray with a pyrethrin-based insecticide if infestations are severe
Pest Flea Beetles
Identification: Tiny round holes scattered across leaves; small dark beetles that jump when disturbed
- Cover young plants with fleece in spring
- Keep plants well-watered to help them outgrow damage
- Rarely necessary; healthy plants tolerate minor damage
Pest Slugs and Snails
Identification: Shredded or missing young shoots at ground level; slime trails
- Apply biological nematode control in early spring
- Use copper tape or grit barriers around the crown
- Apply ferric phosphate slug pellets around emerging growth
Disease Crown and Root Rot
Symptoms: Plant fails to emerge in spring; crown is soft and mushy at soil level; foul smell
Treatment: Remove and destroy affected plants; improve drainage before replanting
Prevention: Ensure excellent drainage; use gravel mulch around the crown; avoid overwatering
Disease Powdery Mildew
Symptoms: White powdery coating on leaves; affected foliage may yellow and drop
Treatment: Remove badly affected leaves; improve air circulation
Prevention: Ensure good spacing; avoid overhead watering; choose resistant cultivars
Disease Downy Mildew
Symptoms: Yellow patches on upper leaf surfaces with grey-purple fuzzy growth underneath
Treatment: Remove affected leaves; improve air circulation; avoid wetting foliage
Prevention: Good spacing; water at the base; avoid overhead irrigation
Popular Varieties
Whirling Butterflies, Siskiyou Pink, The Bride, Passionate Rainbow, Sparkle White
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