10+
Penstemon is a perennial flowering plant with an upright to bushy growth habit and narrow, lance-shaped foliage. It is well adapted to temperate and semi-arid climates and performs best in full sun with well-drained soil. This plant establishes from seed and is suitable for garden beds, borders, and naturalized planting areas. It prefers moderate moisture during establishment and becomes more tolerant of drier conditions over time.
Features
- Upright to bushy perennial with structured growth
- Suitable for beds, borders, and naturalized areas
- Performs well in full sun environments
- Adapted to temperate and semi-arid climates
- Tolerates drier conditions once established
Specifications
- Scientific Name: Penstemon spp.
- Common Name (US): Penstemon
- Seed Type / Variety: Standard Variety
- Growth Habit: Upright to bushy perennial
- USDA Zones: 4-9
- Planting Season: Spring or fall
- Growing Season: Warm to mild season
- Sowing Season: February to April and September to October
- Germination Time and Conditions: 14-28 days at 18-22°C; may benefit from light or cold stratification
- Sunlight Requirements: Full sun
- Soil Requirements: Well-drained, light to moderately fertile soil
- Watering Needs: Moderate; reduce watering after establishment
- Mature Plant Size: 30-90 cm height, 30-60 cm spread
- Plant Spacing: 30-45 cm between plants
