How to Grow Oxalis deppei
iNaturalist
Oxalis deppei
Oxalis deppei
flowerOxalis deppei, commonly known as Iron Cross plant or Lucky Clover, is a tender perennial with distinctive clover-like leaves marked with deep burgundy or purple blotches resembling an iron cross. It produces delicate pink or white flowers and is popular as a houseplant and garden ornamental in mild climates. The plant grows from small underground tubers and is valued for its striking foliage year-round.
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Example Oxalis deppei timeline · Pittsburgh, PA (Zone 6b)
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Plant Oxalis deppei
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 Oxalis deppei blooms
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Oxalis deppei dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives outdoors in zones 10-11; grow as houseplant or container plant elsewhere
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Get my Oxalis deppei timeline →Growth Stages
Dormancy/Tuber Rest
2-3 monthsTubers lie dormant in cool, dry conditions; minimal visible growth above soil
Store tubers in cool (50-60°F), dry place; keep soil barely moist; this period typically occurs in late fall to winter
Sprouting/Emergence
2-3 weeksSmall shoots emerge from tubers; first true leaves appear with characteristic clover shape and purple markings
Increase watering as growth appears; provide bright, indirect light; maintain temperatures 60-70°F for best emergence
Vegetative Growth
4-8 weeksFoliage expands with numerous clover-like leaves displaying iron cross markings; plant becomes fuller and bushier
Maintain consistent moisture; fertilize every 2-3 weeks with diluted balanced fertilizer; pinch back stems to encourage bushiness; rotate pot for even growth
Flowering
6-12 weeksDelicate pink, white, or occasionally magenta flowers bloom above the foliage; flowers open in bright light and close at night
Maintain bright, indirect light to promote blooming; reduce fertilizer nitrogen and increase phosphorus; continue regular watering
Maturity/Decline to Dormancy
4-6 weeks transitioning to dormancyFlowering slows; foliage may yellow or decline as plant naturally enters dormancy; energy returns to tubers
Gradually reduce watering; stop fertilizing; allow stems to die back naturally; move to cool location (50-60°F) to promote rest period
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; isolate affected plant; wipe leaves with rubbing alcohol on cotton swab
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Increase humidity with misting; use miticide spray; ensure good air circulation; shower plant gently under water
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Allow soil surface to dry between waterings; use sticky traps; water from bottom; apply Bacillus thuringiensis israelensis (BTi)
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Remove by hand with tweezers; spray with horticultural oil or neem oil; treat every 7-10 days until controlled
Uses
Indoor Ornamental Houseplant
HouseholdValued as a decorative houseplant for its striking foliage with burgundy iron cross markings and delicate flowers. Perfect for shelves, desks, and window sills where its ornamental qualities brighten indoor spaces year-round. [source]
Feng Shui & Luck Symbol
CraftIn Asian cultures, the four-leafed clover markings on Oxalis deppei leaves symbolize luck and good fortune, making it a popular gift plant. Often displayed during celebrations and New Year for prosperity beliefs. [source]
Pollinator-Friendly Flowers
WildlifeThe delicate pink and white flowers attract bees and other pollinators, supporting local pollinator populations when grown in gardens or near outdoor spaces. [source]
Traditional Uses
MedicinalIn some traditional medicine systems, Oxalis species are used for their mild diuretic and anti-inflammatory properties, though scientific evidence is limited and use should be supervised. [source]
Edible Accent
CulinaryOxalis leaves have a mildly sour, lemony flavor due to oxalic acid content and can garnish salads in small quantities for visual appeal and tangy taste, though consumption should be moderate. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Oxalis deppei is primarily ornamental and not harvested. Enjoy foliage and flowers throughout the growing season. Remove dead flowers and yellowing leaves to maintain appearance. In late fall, allow foliage to die back naturally as plant prepares for dormancy; do not harvest tubers unless propagating.
Fun Facts
- 🌱 The name 'Iron Cross' refers to the distinctive burgundy or deep purple cross-shaped markings on the center of each clover-like leaf, resembling the German Iron Cross insignia.
- 🌱 Oxalis flowers exhibit nyctinasty—they open during the day in bright light and close at night, creating a rhythmic daily dance of opening and closing.
- 🌱 The plant grows from small underground tubers that can enter dormancy during unfavorable conditions, allowing it to survive seasonal changes and emerge again when conditions improve.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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