How to Grow Red Heart
Wikimedia Commons
Red Heart
Hibiscus acetosella
shrubRed Heart is a tropical shrub prized for its striking deep burgundy to blood-red foliage and delicate yellow flowers with a prominent red center. It's a fast-growing ornamental plant that adds dramatic color to gardens and containers, thriving in warm climates. The entire plant, including stems and leaves, exhibits rich red coloring that intensifies in full sun.
When should you plant Red Heart 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 Red Heart timeline · Pittsburgh, PA (Zone 6b)
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Plant Red Heart
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 Red Heart
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Red Heart dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11; grown as an annual in cooler zones or overwinter indoors
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Seedling
2-3 weeksTiny seedlings emerge with initial green foliage; red coloring begins to develop within 1-2 weeks under good light
Provide bright light, maintain consistent moisture, keep soil warm (70-75°F), thin seedlings to prevent crowding
Vegetative Growth
4-8 weeksPlant develops multiple stems with increasingly deep red-burgundy foliage; leaves become more deeply lobed and colorful
Pinch growing tips to encourage bushier growth, fertilize bi-weekly with balanced fertilizer, ensure full sun for color development, provide support if needed
Fruiting
4-6 weeksSmall seed capsules develop from pollinated flowers, though seed production is not the plant's main ornamental feature
Remove seed pods to redirect energy to foliage and flowers, maintain regular care schedule
Dormancy/Decline
Variable depending on climateIn cooler climates or as days shorten, growth slows; plant may lose leaves if exposed to cold or brought indoors
Reduce watering, bring indoors before frost, provide bright light indoors, maintain temperature above 50°F
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 if severe; increase humidity
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Use yellow sticky traps; spray with neem oil or insecticidal soap; improve air circulation
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Remove with alcohol-dipped cotton swab; spray neem oil; isolate infested plants
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Scrape off manually; spray horticultural oil; treat with neem oil in early stages
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Spray with strong water stream; use insecticidal soap; encourage beneficial insects like ladybugs
Uses
Edible Ornamental Garnish
CulinaryThe young leaves and flowers are technically edible and can be used as colorful garnishes for salads and beverages, adding visual appeal and a tart flavor profile similar to hibiscus. [source]
Traditional Herbal Remedy
MedicinalIn traditional African and Caribbean medicine, Red Heart leaves and flowers are used to make teas and decoctions believed to support digestive health and reduce inflammation, though scientific evidence is limited. [source]
Natural Dye Source
HouseholdThe deep red and burgundy foliage can be used to create natural dyes for fabrics and crafts, producing rich red and purple hues through extraction and fermentation processes. [source]
Ornamental Garden & Container Display
CraftRed Heart is primarily grown as a dramatic accent plant for tropical gardens, containers, and indoor displays, prized for its intense foliage color that creates striking visual contrast with other plants. [source]
Pollinator Support
WildlifeThe delicate flowers attract bees, butterflies, and other pollinators, making Red Heart a valuable addition to gardens designed to support beneficial insects and wildlife. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Red Heart is ornamental rather than harvested for yield. Pinch growing tips regularly to encourage bushiness and shape. Remove spent flowers to extend blooming. In frost-prone areas, propagate from cuttings before first frost to save plants for next season. Seeds can be collected from mature pods in fall if desired for propagation.
Fun Facts
- 🌱 Red Heart is native to West Africa and is also known as African Rosemallow or Cranberry Hibiscus, though it's not actually related to cranberries
- 🌱 The entire plant—leaves, stems, and calyxes—becomes increasingly deep red in color when exposed to strong, direct sunlight and warm temperatures, making it an ideal choice for highlighting sunny spots
- 🌱 Unlike many annual ornamentals, Red Heart can be perennial in tropical climates (zones 10-11) and will grow into a substantial shrub 3-5 feet tall over multiple seasons
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