How to Grow Purple Emperor
Wikimedia Commons
Purple Emperor
Tradescantia pallida 'Purple Heart'
shrubPurple Emperor is a vibrant ornamental shrub prized for its deep purple foliage that intensifies in bright light. This tropical perennial features lance-shaped leaves and delicate pink or lavender flowers, making it an excellent choice for adding dramatic color to gardens and containers. It's easy to grow and highly adaptable to various growing conditions.
When should you plant Purple Emperor in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Purple Emperor timeline · Pittsburgh, PA (Zone 6b)
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Plant Purple Emperor
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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Harvest Purple Emperor
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Purple Emperor dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9b-11; can be grown as an annual or container plant in cooler zones
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Seedling/Propagation
2-3 weeksYoung plants with emerging small leaves, initially green or light purple depending on light exposure
Keep soil consistently moist. Provide bright, indirect light. Maintain warm temperatures (70-80°F). High humidity promotes rooting.
Vegetative Growth
4-8 weeksRapid leaf development with increasing purple pigmentation; plant becomes bushy with multiple stems
Pinch back growing tips to encourage bushiness. Ensure full sun for deepest purple color. Feed with balanced fertilizer every 2 weeks.
Flowering
Continuous in growing season, peaks in summerSmall pink, lilac, or lavender flowers appear in clusters at branch tips; foliage remains the main attraction
Flowers are secondary to foliage; deadheading is optional. Continue regular feeding and watering. Maintain full sun exposure.
Established Plant
3-6 months onwardMature shrub with dense purple foliage and ongoing flower production; plant reaches full height (2-3 feet)
Prune as needed to maintain shape and size. Fertilize monthly during growing season. Reduce water and feeding in winter.
Winter Dormancy (in temperate zones)
2-4 monthsGrowth slows significantly; some leaves may drop; color may fade slightly in reduced light
Reduce watering frequency. Bring container plants indoors in frost-prone areas. Minimal fertilizing needed.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use insecticidal soap or neem oil every 7 days; increase humidity
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Remove with alcohol-soaked cotton swab; treat with insecticidal soap or neem oil spray
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Prune affected branches; treat with horticultural oil or insecticidal soap
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Use yellow sticky traps; spray with neem oil or insecticidal soap
Uses
Edible Flowers
CulinaryThe delicate pink and lavender flowers are edible and can be used as a garnish for salads, desserts, and beverages, adding a mild, slightly sweet flavor and striking visual appeal. [source]
Indoor Container Plant
HouseholdPurple Emperor is excellent for potted cultivation indoors and outdoors, brightening living spaces, patios, and porches with its deep purple foliage year-round in warm climates. [source]
Floral Arrangements
CraftThe striking purple leaves and delicate flowers make Purple Emperor ideal for fresh and dried floral arrangements, providing rich color contrast in bouquets and decorative displays. [source]
Pollinator Support
WildlifeThe flowers attract bees, butterflies, and other pollinators, making Purple Emperor a valuable addition to gardens supporting beneficial insects and wildlife. [source]
Color Theory & Garden Design
HouseholdPurple Emperor provides dramatic foliage color that creates striking contrast in garden beds and container gardens, functioning as a living art piece for landscape design. [source]
Harvest Tips
Purple Emperor is grown for ornamental foliage rather than harvest. Pinch back stems regularly to encourage bushier growth and maintain compact shape. Remove any faded or diseased leaves. In mild climates, prune hard in early spring to rejuvenate older plants.
Fun Facts
- 🌱 Purple Emperor's color intensity increases dramatically in full sun due to anthocyanin production—the same pigment that makes blueberries blue.
- 🌱 The plant can be easily propagated from cuttings placed in water, rooting in as little as 1-2 weeks, making it a perfect starter plant for propagation experiments.
- 🌱 In tropical regions where it's perennial, Purple Emperor can grow 3+ feet tall and wide, but is easily controlled through pinching and pruning to maintain a compact, attractive shape.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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