Penstemon 'Sour Grapes'
Cottage Garden must-have in rich Purple
Grown by Jack
Hereford
Choose your size
Out of stock
Currently out of stock
Currently out of stock
Currently out of stock
Currently out of stock
Plant diary
- Flower
- Harvest
Penstemon 'Sour Grapes'
- Rich Purple flowers on tall upright stems
- Flowers all the way from July to November
- Adds height and colour to Cottage Garden borders
- Provides vibrant colour right the way up to winter
- RHS Certified 'Plant for Pollinators'
What to expect
Supplied as
Eventual spread
Flower colour
Habit
Hardiness
Will this grow in my garden?
Can I grow this in a pot?
Yes, Penstemon 'Sour Grapes' is well-suited to 30 cm pots, enjoying a sunny position and temperatures around 24°C.
How big does it get?
Penstemon 'Sour Grapes' typically reaches a mature height of 70 cm and a spread of 60 cm.
How much sunlight does this need?
Penstemon 'Sour Grapes' requires full sun or partial shade to flourish.
What kind of soil does this plant prefer?
Penstemon 'Sour Grapes' prefers moist but well-drained, fertile soil, adapting well to standard garden conditions.
How much watering does this plant need?
Water Penstemon 'Sour Grapes' regularly to keep the soil evenly moist, providing about 2.5 cm of water weekly during the growing season, and slightly more when temperatures surpass 25°C.
Will this plant need pruning?
No strict pruning is required, but Penstemon 'Sour Grapes' generally benefits from deadheading faded flowers to encourage further blooming and cutting back dead foliage in late autumn or early spring.
How hardy is this plant?
Penstemon 'Sour Grapes' has an RHS rating of H4, withstanding temperatures down to -10°C, making it hardy through most of the UK but it may require protection in the coldest areas.
The wider garden
Hereford
Meet Jack
Perennials born in Herefordshire, blooming in your garden
Our perennials start life in the rolling Herefordshire hills, where Jack and his team trial over 250 new varieties each year to bring you the best performing and most sustainable plants in the UK. With over forty years of excellence, it’s no surprise that they’ve won the HTA Plant Grower of the Year award two years running.
What customers say about us
We do our best to provide you the best experience ever
Learn from our experts
For growing advice that's clear and easy to follow
What customers say about us
We do our best to provide you the best experience ever
Fighting plastic waste
Delivering fresh from the nursery
Supporting UK growers