Home>Flowers, Plants & Shrubs>Garden Plants>Flowers, Plants & Shrubs>Perennial & Biennial Plants>Perennials for Containers
Watch our Video
Penstemon 'Blackberry'
Hardy Perennial
What is Hardy Perennial?
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.
FROM £6.99
Eye-catching tubular flowers appear in summer above a flush of glossy, semi-evergreen foliage
Extremely long flowering period, lasting well into autumn
Superb drought resistance
Undemanding and easy to grow
Delivery Information
View Product Description
Out of Stock
Please select a pack size below and get notified when back in stock
Why not try this instead
Loading...
Height Up to 75cm (29.5in)
Spread Up to 40cm (15.7in)
Hardy Perennial
cottage gardenswildlife gardens
Sun or semi shade
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Flowering Months
Why not try this instead
Description
How to Grow
Reviews
Video
Satin, bell-shaped flowers in a rich shade of purple smother the upright stems of this hardy perennial. From June onwards, the long-lasting flowers are produced above glossy, semi-evergreen foliage and continue their display well into autumn, long after most other summer perennials have faded. Penstemon 'Blackberry' is undemanding and easy to grow, tolerating almost any position in the garden, regardless of rain or drought, and even resisting slug damage! Height: 75cm (30"). Spread: 40cm (16").
Show Codes
1 x 9cm Potted Plant (KF0148)
3 Jumbo Plug Plants (KB8166)
1 jumbo plug plant (50791)
Pot up penstemon plants and grow them on in frost free conditions until plants are well grown. Pinch out the growing tips while plants are still small to encourage bushier growth. When plants are well developed, acclimatise them to outdoor conditions over 7 to 10 days before planting them outdoors into borders and patio containers. Grow penstemon in a sunny or semi shaded position on fertile, well drained soil. Penstemons can tolerate dry soils once established but dislike heavy soils that are particularly cold and wet in winter. Improve heavy soils by adding plenty of coarse grit prior to planting.
More Info Feed and water penstemons regularly until they are fully established. Once established they are reasonably tolerant of drought and will require little maintenance. Deadhead faded penstemon flowers to maintain the plant's vigour and encourage further blooms to be produced. In cold areas apply a dry mulch of bark chips of straw around the crown of each plant in autumn. Leave the old foliage intact until spring to protect plants during winter.
Delivery
Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.
Orders for packets of seed incur a delivery charge of £2.99.
Orders which include any other products will incur a delivery charge of £6.99.
Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.
Large items may incur a higher delivery charge - this will be displayed in your shopping basket.
Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.
For more information on how we send your plants please visit our Helpful Guide on plant sizes.
LOADING...
Recently Viewed
Sign Up For Exclusive Special Offers
About us
Customer Help Centre
Planting & Cultural Advice
Job Vacancies
Privacy Policy
Cookies
Environmental Policy
Terms & Conditions
Certificates
Our Gardening App
T&M Marketplace
Affiliate Program
Group Scheme
Product Reviews
Delivery
Quick Shop
Gender Pay Gap
Modern Slavery Act
Gardening Club
eGift Vouchers
Request a Catalogue
Retail Enquiries
Seed Stockists
Press & Media Resources
Wholesale Enquiries
Promotional Seeds Enquiries
Ukraine Appeal
© 2024 Thompson & Morgan. All rights reserved. A division of Branded Garden Products Limited.
