How to Grow African Violet Streptocarpus
Wikimedia Commons
African Violet Streptocarpus
Streptocarpus spp.
flowerAfrican violet streptocarpus, commonly called Cape primrose, is a tender perennial houseplant prized for its delicate, colorful flowers that bloom prolifically throughout the year. Native to South Africa, these compact plants produce tubular or trumpet-shaped flowers in shades of purple, pink, blue, white, and red with distinctive striped throats. They are relatively easy to grow indoors with proper humidity and light conditions.
Looking for a specific variety?
When should you plant African Violet Streptocarpus 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 African Violet Streptocarpus timeline · Pittsburgh, PA (Zone 6b)
-
Plant African Violet Streptocarpus
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
First African Violet Streptocarpus blooms
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact African Violet Streptocarpus dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11 outdoors; primarily grown as a houseplant in colder climates
Sign up free to see if African Violet Streptocarpus grows in your zone — and get a personalized planting timeline.
Get my African Violet Streptocarpus timeline →Growth Stages
Seedling
4-6 weeksTiny seedlings emerge with first true leaves; extremely delicate and slow-growing initially
Maintain high humidity (70-80%), keep soil moist, provide bright indirect light, use bottom heat (70-75°F) to encourage germination. Do not allow to dry out.
Juvenile/Vegetative
2-4 monthsPlant develops rosette of fuzzy, slightly hairy leaves; no flowers yet. Growth is gradual and compact.
Maintain bright, indirect light 12+ hours daily. Allow slight drying between waterings but never fully dry. Maintain humidity 50-70%. Fertilize monthly with diluted liquid fertilizer (high phosphorus for flowering).
Pre-flowering
2-4 weeksPlant reaches mature size, leaf rosette is full, flower buds begin to form at leaf axils
Continue bright indirect light and consistent moisture. Reduce nitrogen, increase phosphorus and potassium fertilizer to promote blooming. Maintain stable temperatures 65-75°F.
Flowering
4-12 months (can be nearly year-round with proper care)Multiple delicate tubular flowers bloom continuously with characteristic striped or solid coloring, typically with 2-petaled lower lip
Maintain consistent conditions—temperature, humidity, light, and moisture are critical. Deadhead spent flowers to encourage continued blooming. Continue diluted fertilizer every 2-3 weeks. Ensure air circulation to prevent mold.
Rest/Dormancy (optional)
1-3 months (seasonal or optional)Flowering slows or stops; plant may appear less vigorous, older leaves decline
Reduce watering slightly and fertilizing frequency. Maintain bright light. This is normal; plant will revive with continued proper care or warmer spring temperatures. Some varieties rest naturally.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with insecticidal soap or neem oil; isolate affected plant; remove with cotton swab dipped in rubbing alcohol for light infestations
-
Increase humidity significantly; spray with water to rinse undersides; use miticide if severe; improve air circulation
-
Spray with insecticidal soap or neem oil; rinse plant thoroughly with water; repeat as needed
-
Use yellow sticky traps; spray with insecticidal soap; improve ventilation; isolate plant from others
-
Repot in fresh, dry potting mix; trim affected roots; reduce watering frequency; ensure pot has drainage holes; avoid cold, wet conditions
-
and
(fungal)
Improve air circulation; avoid wetting foliage; remove affected leaves; spray with fungicide if severe; reduce humidity slightly if possible
Uses
Indoor Ornamental Decoration
HouseholdAfrican violet streptocarpus is prized as a long-blooming houseplant that adds color and elegance to windowsills, shelves, and indoor gardens. The delicate, trumpet-shaped flowers in various colors provide continuous beauty year-round with proper care. [source]
Gift and Collector Plant
HouseholdThese plants are popular gifts and among plant collectors due to their variety of flower colors, patterns, and cultivars. Many enthusiasts enjoy maintaining specialized collections of different Streptocarpus varieties. [source]
Botanical Illustration and Photography
CraftThe intricate, colorful flowers of streptocarpus are favorite subjects for botanical artists, gardening photographers, and plant enthusiasts documenting plant diversity. [source]
Pollinator Support (Outdoor growing)
WildlifeIn appropriate climates or when placed outdoors, the tubular flowers attract bees, hummingbirds, and other pollinators, providing nectar and supporting local insect populations. [source]
Harvest Tips
Not harvested for food. Deadhead spent flowers by pinching off at the base to encourage continuous blooming. Flowers typically last 1-2 weeks on the plant. For propagation, remove healthy mature leaves with petioles and propagate in moist seed-starting mix or water.
Fun Facts
- 🌱 African violet streptocarpus flowers have a unique two-petaled lower lip that resembles a distinctive 'mouth,' giving them an almost whimsical appearance that captivates plant enthusiasts.
- 🌱 Despite their common name 'African violet,' streptocarpus are not related to true violets (Viola species) but were given this name by early botanists due to superficial flower resemblance.
- 🌱 Streptocarpus can be propagated from a single leaf cutting, which will produce multiple plantlets—making them an economical way for collectors to multiply their favorite varieties.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized African Violet Streptocarpus planting timeline
Tell us your zip code and we'll calculate exactly when to start African Violet Streptocarpus seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my African Violet Streptocarpus timeline →