- Shop Now
- Burncoose Specialities
- This Month
- Offers & Promotions
- RHS Chelsea Flower Show 2022
- Engage With Us
- Information, Help & Advice
- About Us & Our Services
- Terms & Conditions
- Log In / Register
emailWould you like to receive Burncoose newsletters?
Keep up to date on offers, events and news from us and the rest of the Caerhays Estate.
emailPlease enter your email address
Semi-evergreenKeeps some of its foliage all year, and will drop some leaves as well.Elliptic to narrowly ovate leaves 12cm (4¾in) long
BlueGreyish blue with rich purple
PurpleShades of purple/mauve/lilac/violet
HerbaceousEarly in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.Erect perennial
Hardy - average winterHardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
PENSTEMON 'Sour Grapes'
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
Additional FeaturesGood to knowWildlife plant - bees. Deadhead to prolong flowering. Leave foliage through winter for protection.Pests & DiseasesChrysanthemum eelworm, powdery mildewPlace of originGarden origin. Collected by Margery Fish, East Lambrook, Somerset, UKResistant to honey fungusThese plants have little or few problems with honey fungus.
Flower ShapeBell/LanternPaniclesTubular5-7cm (2-3in) long
Soil ConditionsFertile well drained soilGive winter mulch
- Dividing Herbaceous Perennials - Video Tip ondemand_video
- Spring Planting Osteospermums - Video Tip ondemand_video
- Dividing Summer Perennials - Video Tip ondemand_video
- Dividing summer flowering Hemerocallis - Video Tip ondemand_video
- Summer propagation - Video Tip ondemand_video
- Self-seeding aquilegia - Video Tip ondemand_video
- Supporting Plants - Video Tip ondemand_video
- Dead heading meconopsis - Video Tip ondemand_video
- Dead heading Delphiniums - Video Tip ondemand_video
- Feeding herbaceous peonies - Video Tip ondemand_video
- Overpotting Problems - Video Tip ondemand_video