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Streptocarpus Constant Nymph
Streptocarpus × hybridus 'Constant Nymph'
flowerConstant Nymph is a classic hybrid Cape primrose cultivar prized for its prolific, vibrant purple-blue flowers with darker veining and yellow throats. This compact, evergreen houseplant produces delicate, trumpet-shaped blooms nearly year-round under proper conditions. It's an excellent choice for indoor gardening, especially on windowsills or under grow lights.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10b-12; grown as a houseplant in all zones
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Growth Stages
Seedling
4-6 weeksTiny, delicate seedlings with first true leaves appearing 2-3 weeks after germination; extremely slow initial growth
Maintain high humidity (70-80%) with plastic dome cover; provide gentle bottom heat (65-70°F); bright light but no direct sun; keep soil moist but well-draining; provide air circulation to prevent fungal issues
Vegetative
6-12 weeksPlant develops rosette of fuzzy, elongated leaves; stems gradually lengthen; foliage is soft, hairy, and emerald green
Transition to normal humidity as plant matures; provide bright, indirect light; maintain consistent moisture; feed with dilute balanced fertilizer every 3-4 weeks; pot up carefully when roots emerge from drainage holes
Budding
3-4 weeksFlower buds emerge from leaf axils along stems; buds are small and elongated, gradually developing color; plant continues vegetative growth
Maintain bright, indirect light and warm temperatures (65-75°F); reduce nitrogen fertilizer, increase phosphorus/potassium; ensure good air circulation; maintain consistent watering; humidity 50-65% optimal
Flowering
6-12 weeks per bloom cycle; continuous with proper careDelicate purple-blue trumpet flowers with darker veining, white markings, and yellow throats open successively along stems; multiple flowers blooming simultaneously
Maintain bright, indirect light; avoid temperature fluctuations; deadhead spent flowers to encourage continuous blooming; maintain humidity at 50-65%; fertilize monthly with blooming formula; keep soil consistently moist
Mature/Long-term
Ongoing; can live 5+ yearsEstablished plant with multiple flowering stems; may reach 8-12 inches tall and equally wide; becomes woody at base with age; flowering extends year-round indoors
Rejuvenate every 2-3 years by removing lower leaves and burying stems deeper to promote new roots; divide mature plants in spring; provide consistent care; watch for pest infestations; repot every spring into fresh potting mix
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; isolate plant; inspect frequently; wipe leaves with alcohol-dipped cotton swab for small infestations
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Yellow sticky traps; spray with insecticidal soap every 5-7 days for 3 weeks; improve air circulation; avoid overwatering which encourages them
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Increase humidity to 60%+; spray with water to dislodge; use neem oil or miticide if severe; improve air circulation; isolate affected plants
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Let soil surface dry slightly between waterings; use yellow sticky traps; apply sand layer on soil surface; drench soil with insecticide if severe
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Improve air circulation; reduce humidity if it exceeds 70%; avoid wetting foliage; remove affected leaves; use fungicide spray if widespread
Uses
Not for consumption
CulinaryStreptocarpus flowers are ornamental only and not intended for culinary use. [source]
Indoor air quality and home decoration
HouseholdConstant Nymph is grown exclusively as a decorative houseplant that brightens indoor spaces with continuous blooms. While not a major air-purifying plant, it contributes to indoor aesthetics and improves mood through its beautiful, delicate flowers. [source]
Cut flower arrangements and floral design
CraftThe delicate purple-blue flowers can be carefully cut and used in miniature floral arrangements, corsages, or small vase displays. The flowers are fragile and best used fresh in small, intimate arrangements. [source]
Pollinator attraction indoors
WildlifeWhen grown indoors near windows, the flowers may attract small flying insects and can support indoor beneficial insects like small bees if pollination is desired. Excellent for observing insect behavior in controlled environments. [source]
Not medicinally used
MedicinalStreptocarpus has no established medicinal applications and should not be ingested or used for medicinal 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
Not harvested for produce; instead, deadhead spent flowers regularly by pinching or cutting just below the flower calyx to encourage continuous blooming. Remove faded flowers before seeds develop. Stems can be gently pruned to shape the plant in spring, cutting just above a leaf node. For seed collection, allow some flowers to go to seed; tiny seeds will disperse from elongated seed pods.
Fun Facts
- 🌱 The genus name 'Streptocarpus' comes from Greek words meaning 'twisted fruit,' referring to the spiral or twisted shape of the seed pods that develop after flowering.
- 🌱 Constant Nymph was registered as a hybrid cultivar in 1939 and remains one of the most popular and reliable Streptocarpus varieties nearly 85 years later, testament to its superior flowering habit and compact growth.
- 🌱 Unlike their African violet cousins (Saintpaulia), Streptocarpus flowers are produced continuously year-round indoors under consistent light and temperature conditions, making them prolific bloomers for patient growers.
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