How to Grow Pink Edge
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Pink Edge
Caladium bicolor 'Pink Edge'
flowerPink Edge is a stunning caladium cultivar prized for its large, heart-shaped leaves featuring deep green coloring with prominent pink or red edges and veining. This tropical foliage plant thrives in warm, humid conditions and serves as an excellent accent plant for shaded gardens, containers, and indoor spaces. It's grown primarily for its ornamental foliage rather than flowers, though small white spathes may appear.
When should you plant Pink Edge in your zone?
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Example Pink Edge timeline · Pittsburgh, PA (Zone 6b)
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Plant Pink Edge
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 Pink Edge blooms
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Pink Edge dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 10-11; can be grown seasonally in zones 9 and cooler with tuber lifting in fall
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Dormancy/Tuber Rest
3-5 monthsTubers are stored dry and dormant, typically from fall through early spring in cooler climates
Store tubers in cool, dry location (50-60°F) with good air circulation. Do not water during dormancy. Inspect for rot periodically.
Sprouting
2-3 weeksEyes on tuber begin to produce sprouts; first leaves emerge from soil
Plant tubers in warm soil (70-75°F minimum); keep soil warm and slightly moist. Provide bright, indirect light. Can use bottom heat to encourage sprouting.
Vegetative Growth
4-8 weeksRapid leaf expansion with multiple new leaves emerging; characteristic pink-edged coloring develops fully
Maintain warm temperatures (75-85°F), high humidity (60-80%), and consistent moisture. Feed every 2-3 weeks with balanced fertilizer. Ensure bright indirect light for optimal color.
Maturity
Summer through early fallPlant reaches full size with multiple stems and numerous large, fully-colored heart-shaped leaves displaying vibrant pink edges
Continue regular watering and feeding through growing season. Pinch off flower spathes if desired to direct energy to foliage. Maintain humidity and warm temperatures.
Senescence/Dormancy Preparation
4-8 weeksAs temperatures drop and daylight decreases (fall), leaf growth slows, foliage color may intensify briefly, then leaves gradually yellow and die back
Reduce watering gradually. Stop fertilizing. Allow foliage to completely die back naturally. Once dead, dig tubers, dry thoroughly, and store for winter.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity to 70%+ as mites prefer dry air. Spray with water to dislodge. Use insecticidal soap or neem oil if severe.
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Remove with cotton swab dipped in rubbing alcohol. Treat with insecticidal soap or neem oil spray every 7-10 days.
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Inspect regularly and remove manually. Apply horticultural oil or insecticidal soap if populations are heavy.
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Maintain good air circulation and humidity. Use sticky traps to monitor. Apply neem oil or insecticidal soap if needed.
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Ensure well-draining soil and avoid overwatering. Do not allow tubers to sit in water. Remove affected plants and repot in fresh soil.
Uses
Not for consumption
CulinaryCaladium tubers and foliage are toxic to humans and pets and should never be eaten or ingested. [source]
Indoor ornamental plant
HouseholdPink Edge makes an excellent houseplant for shaded indoor locations, bringing tropical foliage color to living rooms, offices, and conservatories. Thrives in warm indoor environments with bright, indirect light. [source]
Container gardening and design
CraftPopular choice for mixed container plantings, shade gardens, borders, and landscape accents. The striking pink-edged foliage provides visual interest and complements other shade-loving plants. [source]
Limited wildlife value
WildlifeCaladiums do not provide significant food or shelter for pollinators or wildlife, though the small flowers may occasionally attract insects. Primarily valued for aesthetic purposes. [source]
Harvest Tips
Pink Edge caladiums are grown for foliage, not harvested in the traditional sense. Deadhead flowers (spathes) if they appear to redirect energy to leaf growth. In fall before frost in cooler zones (zone 9 and below), carefully dig tubers once foliage dies back, let them dry for 2-3 weeks in a warm location, then store in cool, dry conditions until spring.
Fun Facts
- 🌱 Caladiums are native to tropical South America, particularly the Amazon rainforest, where they grow as understory plants in dappled shade.
- 🌱 The name 'Caladium' comes from the Tupi word 'taioba,' reflecting the plant's South American heritage and indigenous uses.
- 🌱 Pink Edge and other caladium cultivars have been extensively hybridized by horticulturists since the Victorian era, making thousands of named varieties available to gardeners today.
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