‘Dark Towers' Penstemon (Penstemon 'Dark Towers') is a seasonal plant with pink or white flowers from late spring into early summer. They prefer mesic to dry soil in sun to part sun where they grow up to 3 feet tall. They are a good choice for slopes and banks. Companion plants include ‘Hummelo’ Betony (Stachys officinalis 'Hummelo') and ‘Iron Butterfly’ Ironweed (Vernonia lettermanii 'Iron Butterfly').
Maintenance
Root rot can be a problem in wet soils.
About
Light Requirements
Sun,
Part Sun Moisture Requirements
Banks,
Slopes Soil Requirements
Most Soils Height
Short Spacing
1 to 2 feet Category
Seasonal Attracts
Butterflies,
Hummingbirds Illinois Native Plant Status
Native Plant Cultivar Bloom Time
May,
June Bloom Color
Pink,
White Seasonality
Spring,
Summer Sociability
Groups of 5-10