Join Our Gardening Club

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.

£9.99

44% (5 Reviews)
Garden Club Members Price: £8.99 JOIN TODAY

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...
Please note: This product cannot be delivered outside the United Kingdom.

Height Up to 75cm (29.5in)
Spread Up to 40cm (15.7in)

Hardy Perennial

cottage gardenswildlife gardens

Sun or semi shade

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
Flowering Months

You May Also Like

Lupin 'Gallery Mixed' (Gallery Series)

21 Reviews
Quick Buy

2 Options From£10.29

Begonia x tuberhybrida 'Apricot Shades Improved' F1 Hybrid

1793 Reviews
Quick Buy

14 Options From£5.99

Geranium 'Jackpot Mixed' F1 Hybrid

1105 Reviews
Quick Buy

7 Options From£4.99

Creeping Phlox Collection

Creeping Phlox Collection

777 Reviews
Quick Buy

7 Options From£4.99

Fuchsia Giant-Flowered Collection

Fuchsia Giant-Flowered Collection

1190 Reviews
Quick Buy

6 Options From£3.99

Geranium 'Best Red' F1 Hybrid

610 Reviews
Quick Buy

6 Options From£3.99

Nurseryman's Choice Perennial Collection

307 Reviews
Quick Buy

2 Options From£6.99

Best Value Perennial Collection

Best Value Perennial Collection

891 Reviews
Quick Buy

13 Options From£2.99

Pansy 'Matrix™ Mixed'

1084 Reviews
Quick Buy

8 Options From£8.29

Begonia 'Non-Stop Mixed'

459 Reviews
Quick Buy

10 Options From£4.99

Agapanthus Blue & White Collection

365 Reviews
Quick Buy

2 Options From£14.99

Fuchsia Hardy Collection

Fuchsia Hardy Collection

157 Reviews
Quick Buy

7 Options From£4.99

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").


3 penstemon jumbo plug plants (KB8166)

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 £5.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 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. Sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this, so regretfully we are unable to ship live 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'

5 Reviews
Quick Buy

Just£9.99

Sign Up For Exclusive Special Offers

JOIN NOW
RedEye

Sign up for exclusive offers!