10+
California bluebell, botanically known as Phacelia campanularia, is a compact annual flowering plant valued for its vivid blue blooms and low-growing habit. It develops branching stems with textured foliage and produces bell-shaped flowers during the spring season. This plant adapts well to warm and temperate climates and performs best in full sun with well-drained soil. California bluebell is commonly used in borders, wildflower gardens, and container planting, where it establishes easily from seeds and provides bright seasonal color.
Features
- Low-growing annual with branching habit
- Produces bright blue, bell-shaped flowers
- Suitable for borders, wildflower gardens, and containers
- Adapted to sunny, well-drained conditions
- Easy to grow from seeds
Specifications
- Scientific name: Phacelia campanularia
- Common name (US): California Bluebell
- Seed type / variety: Blue flowering variety
- Growth habit: Low-growing annual
- USDA zones: 3-10 (grown as annual)
- Planting season: Spring
- Growing season: Spring to early summer
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Sowing Season:
- Spring: March to May
- Germination time and conditions: 1-2 weeks at 18-22°C
- Sunlight requirements: Full sun
- Soil requirements: Well-drained soil, tolerant of poor soils
- Watering needs: Low to moderate once established
- Mature plant size: 15-30 cm height, 20-30 cm spread
- Plant spacing: 15-20 cm between plants
