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Penstemon heterophyllus 'Electric Blue'

Hardy Perennial

What is Hardy Perennial?

Tubular flowers in the prettiest shade of blue!

Loved by pollinating insects

Silvery-green foliage remains evergreen

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Description How to Grow More Info Delivery
This charming evergreen perennial bears tubular flowers in the prettiest shade of blue, with just a touch of mauve at the base of each flower. The upright flower spikes appear in summer above a clump of silvery-green leaves. Perfect for planting towards the front of perennial borders where it will mingle beautifully with other perennials and become a firm favourite with bees and other pollinating insects. Height and spread: 60cm (24").

Height Up to 60cm (24in)
Spread Up to 60cm (24in)

Hardy Perennial

cottage gardenswildlife gardens

sun or semi shade

Flowering Months
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1 x 2 Litre Potted Plant (80557)
15 Garden Ready Plants (KC1438)
2 x 2 Litre Potted Plants (T80558P)
3 x 2 Litre Potted Plants (T80559P)

Pot up plants and grow them on in warm, frost free conditions until large enough to plant outdoors. When all risk of frost has passed, gradually acclimatise to outdoor conditions over 7 to 10 days before planting out in their final positions. 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.
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.

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.

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