How to Grow Gloxinia Emperor Frederick
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Gloxinia Emperor Frederick
Sinningia speciosa 'Emperor Frederick'
flowerEmperor Frederick is a stunning hybrid gloxinia cultivar featuring deep velvety burgundy-red flowers with distinctive white picotee edges and a contrasting white throat. This compact, bushy houseplant produces large, velvet-textured blooms and velvety green foliage, creating a dramatic focal point indoors. It thrives as a tropical indoor plant requiring consistent warmth and humidity.
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Example Gloxinia Emperor Frederick timeline · Pittsburgh, PA (Zone 6b)
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Plant Gloxinia Emperor Frederick
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 Gloxinia Emperor Frederick blooms
Around Jul 16≈ 90 days after planting
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Growing Conditions
Soil
Growth Stages
Dormancy/Sprouting
2-4 weeksTuber is dormant or just beginning to sprout small shoots from crown
Start dormant tubers in warm (65-70°F), moist peat moss in low light; ensure good air circulation; do not water until sprouting begins; can take 2-4 weeks to show growth
Vegetative Growth
4-6 weeksRapid leaf emergence and development; plant grows bushy with thick, velvety green leaves and visible stems
Maintain warm temperatures (65-75°F); provide bright, indirect light 12+ hours daily; increase humidity to 50-70%; water when top inch of soil is dry; fertilize weekly with diluted balanced fertilizer (20-20-20)
Bud Formation
2-3 weeksSmall flower buds appear among the foliage; plant continues growing but focuses energy on reproductive structures
Maintain consistent warmth (70-75°F) and humidity; avoid fertilizer changes that promote vegetative growth; switch to higher-phosphorus fertilizer (e.g., 10-30-20) to encourage blooming; ensure air circulation to prevent bud rot
Flowering
6-12 weeks (can extend to 4+ months with proper care)Large, velvety burgundy-red flowers with white picotee edges and white throat open progressively; blooms are long-lasting and showy
Keep soil consistently moist but not soggy; maintain humidity and warm temperatures (68-75°F); remove spent flowers (deadhead) to encourage more blooms; avoid misting flowers directly; provide bright, indirect light; reduce nitrogen fertilizer
Post-Bloom/Dormancy
2-3 monthsFlowers fade; foliage gradually yellows and withers; plant naturally enters dormancy period
Gradually reduce watering as leaves die back; stop fertilizing; move to cool (55-65°F) location; allow soil to dry out; remove dead foliage; store tuber dry in cool, dark place; dormancy typically lasts 2-3 months before restart
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity to 60%+; spray affected foliage with neem oil or insecticidal soap weekly; ensure good air circulation; isolate infected plant
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Use yellow sticky traps; spray with insecticidal soap or neem oil every 7-10 days; improve air circulation; isolate from other plants
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Remove with rubbing alcohol on cotton swabs; spray with neem oil or insecticidal soap; treat every 7 days until eliminated
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Allow soil surface to dry between waterings; use yellow sticky traps; apply BTi (Bacillus thuringiensis israelensis) to soil; improve drainage
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Remove infected flowers/foliage immediately; avoid wetting leaves; improve air circulation; reduce humidity temporarily; apply fungicide if severe
Uses
Non-edible ornamental
CulinaryGloxinia Emperor Frederick is not edible and should never be consumed by humans or pets. It is purely ornamental. [source]
Indoor decoration and air purification
HouseholdThe striking burgundy-red flowers with white picotee edges make this cultivar a premium houseplant for windowsills, terrariums, and indoor gardens. Gloxinias are known to filter indoor air and create humidity in their immediate environment. [source]
Cut flowers and floral arrangements
CraftEmperor Frederick's dramatic velvet flowers are prized by florists for premium fresh arrangements and wedding bouquets. The long vase life (10-14 days) and bold coloring make it a luxury cut flower choice. [source]
Pollinator attraction indoors
WildlifeWhile primarily an indoor plant, gloxinias' tubular flowers attract hummingbirds and bees when grown near open windows or outdoors in warm climates. The nectar guides on the white throat guide pollinators. [source]
Traditional ethnobotanical interest
MedicinalWhile not commonly used medicinally in Western herbalism, some Sinningia species are used in traditional South American medicine. Emperor Frederick itself is valued primarily for ornamental purposes. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut flower stems at base when buds are opening or flowers are fully open; place in cool water immediately; change water every 2-3 days; flowers last 1-2 weeks in vase. Deadhead spent blooms on living plant to encourage additional flowering. If saving tuber, allow foliage to die back completely before storing.
Fun Facts
- 🌱 Emperor Frederick is a hybrid gloxinia that was developed through selective breeding; true gloxinia is genus Gloxinia, while most florist cultivars are Sinningia speciosa, a related genus. The picotee edging (white margins on colored petals) was a major breeding achievement in the 1950s-1970s.
- 🌱 The deep velvet texture of gloxinia flowers and foliage comes from dense, fine hairs (trichomes) that refract light, creating the distinctive soft appearance and rich color saturation unlike nearly any other houseplant.
- 🌱 Gloxinias grow from tubers rather than seeds, making propagation straightforward through division; a mature tuber can be cut into pieces (each with growing points) and propagated, or stored dormant for years in cool, dry conditions.
Gardening Terms
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