Take advantage of our perennial special offer! Add 6 selected perennials to your basket and receive the cheapest one for free. Exclusions apply. Limited time only.

Penstemon 'Heavenly Blue' is a striking perennial with tall spires of soft blue flowers, each with a pale throat that adds depth and contrast. Flowering from early summer to autumn, this variety brings a refreshing, cool-toned colour to borders, gravel gardens and cottage-style planting schemes.

The neat, upright habit makes it a perfect choice for adding height and movement to garden beds, while its long flowering season ensures months of interest. Easy to grow and low maintenance, it is ideal for gardeners of all experience levels and is a magnet for bees and butterflies.

Many garden designers recommend planting Penstemon in groups of three for a balanced, cohesive look. It helps the plants stand out together and creates a lovely flow in your garden. But don't worry—this plant also looks great on its own or in smaller groupings!  

Penstemon 'Heavenly Blue' 9cm

Our plants can be planted all year round providing the ground isn't frozen or waterlogged at time of planting, for more infoclick here

Free Standard Delivery over £150
Eco Friendly Packaging Materials.
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Product Information

  • Soft blue tubular flowers with pale centres

  • Flowers from early summer to first frosts

  • Upright growth reaching 60 to 90 cm tall

  • Thrives in full sun and well-drained soil

  • Attracts pollinators and beneficial insects

  • Responds well to regular deadheading

Delivery Options

Delivery information for UK Mainland Deliveries: 

Our cost for Standard Delivery is £5.99. This price is the same regardless of how many items you purchase! If you spend £150.00 or above, Standard Delivery is free. Standard Delivery takes 2-6 Working Days.  

Next Working Delivery is £9.99. Please place your order by 2pm Monday – Thursday. Please note deliveries are carried out by a third party couriertherefore, we cannot guarantee our Next Day Delivery Service. During very busy periods, Next Working Day delivery may be temporarily unavailable. 

Postcode and delivery exclusions apply.  


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Supplied in a 9cm Growers Pot

This plant is a herbaceous perennial. Herbaceous perennials die back below ground level each autumn, then fresh new growth will appear in the spring. Remove faded blooms to promote new growth. 

Images are used for illustrative purposes only. Due to the maturity of the plant and the time of the year, plants may not arrive looking like our images.  


60cm x 60cm
Full Sun/Partial Shade
Well drained soil
Fully hardy

Frequently Asked Questions

If you order by 2:00pm Monday - Thursday (Excluding Bank Holidays) and select 'Next Working Day Delivery' we aim to deliver your order on the Next Working Day.

If you select Standard Delivery you will receive your order in 2-5 Working Days from the day your order was placed.

95% of the plants we have in stock on our website can be planted 365 days a year providing the ground is not frozen or waterlogged at time of planting.

We are very proud to be rated 'EXCELLENT' on Trustpilot. To have a read through some of our reviews please clickhere.

We take the upmost care in selecting and packaging our plants to dispatch.

If you are not 100% happy with your order, please let us know. Ensure that you please return your order back to us within 28 days and we can either issue a refund or send out replacements!

Of course, please contact us on 01706 881 422 to talk to a member of our friendly team.

We do now allow collections under any circumstances, however with our Next Working Day Delivery you can receive your order the very next day* !