CLEARANCE SALE

Popular 18 others are looking at this right now

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.

FROM £6.99

66% (14 Reviews)

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

Loading...
Garden Club Members Price: FROM £6.29 JOIN TODAY

Frequently bought with

Select to add to basket


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

You May Also Like

Geranium 'Flower Fairy Pink Splash'

Geranium 'Flower Fairy Pink Splash'

4 Reviews

3 Options From£7.19 (was £11.99)

ADD TO BASKET
Nemesia Nesia White

Nemesia Nesia White

1 Review

3 Options From£7.19 (was £11.99)

ADD TO BASKET
Coleus Premium 'Sun Coral Candy'

Coleus Premium 'Sun Coral Candy'

0 Reviews

2 Options From£9.99 (was £12.99)

ADD TO BASKET
Peony 'Garden Treasure'

Peony 'Garden Treasure'

1 Review

2 Options From£16.99

ADD TO BASKET
Blackberry 'Coolaris Patio Black' (Patio fruit)

Blackberry 'Coolaris Patio Black' (Patio fruit)

3 Reviews

4 Options From£9.00 (was £9.99)

ADD TO BASKET
Begonia 'Nonstop Mixed'

Begonia 'Nonstop Mixed'

646 Reviews

6 Options From£7.99

ADD TO BASKET
Busy Lizzie 'Beacon'

Busy Lizzie 'Beacon'

232 Reviews

6 Options From£5.99

ADD TO BASKET
Geranium pratense 'Summer Skies'

Geranium pratense 'Summer Skies'

4 Reviews

5 Options From£7.99 (was £9.99)

ADD TO BASKET
Begonia 'Nonstop Citrus'

Begonia 'Nonstop Citrus'

113 Reviews

5 Options From£13.99

ADD TO BASKET
Geranium 'Rozanne'

Geranium 'Rozanne'

236 Reviews

14 Options From£7.19 (was £9.99)

ADD TO BASKET
Mangave 'Praying Hands'

Mangave 'Praying Hands'

0 Reviews

4 Options From£14.99

ADD TO BASKET
Mandevilla sanderi 'Bloom Bells®' Trio

Mandevilla sanderi 'Bloom Bells®' Trio

34 Reviews

Just£24.99 (was £28.99)

ADD TO BASKET
Description
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

3 Jumbo Plug Plants (KB8166)

1 jumbo plug plant (50791)

1 x 9cm Potted Plant (KF0148)

How to Grow
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.

Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. While the majority of our nursery plants cope well with slight delays in intransit, sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this for some of our smaller plug products and tender bedding and vegetable lines, which do not respond well to the extra journey time. So regretfully while we offer the majority of our live plant offering nationwide, we are unable to ship plugs, begging plants and tender vegetable plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3

Reviews
Video

LOADING...

Recently Viewed

Penstemon 'Blackberry'

Penstemon 'Blackberry'

14 Reviews

3 Options From£6.99 (was £8.99)

ADD TO BASKET

Sign Up For Exclusive Special Offers

JOIN NOW
RedEye

Sign up for exclusive offers!