Penstemon 'Heavenly Blue'

Spires of brilliant, coloured bells which will add colour and beauty right through the autumn. More
1 x 9cm plant 510967-9C01 £5.50

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3 x 9cm plants 510967-9C03 £13.95

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Or buy this as part of our Penstemon Collection.

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Penstemon 'Heavenly Blue' has spires of brilliant, coloured bells which will add colour and beauty right through the autumn.

Genus Penstemon heterophyllus
Variety Heavenly Blue
Type Hardy Perennial
Common Name Foothill Penstemon
Border Position Middle
Soil Type Neutral
Scent Unscented
Site Full Sun
Moisture Well-drained
Height 45cm (18in)
Spacing 30cm (12in)
Sowing, Seeds, Planting Plant in spring or summer in well-drained soil. If you garden on heavy clay, add plenty of coarse grit to avoid plants sitting in winter wet. Prefers sun or light shade. Sprinkle mycorrhizal fungi (Rootgrow) into the base of the planting hole and water well after planting.
Care Tips Leave the current seasons growth on over winter to provide protection and mulch around the base of the plant in autumn with compost or leaf mould. Cut back old growth in late spring as new shoots are appearing.
Flowering July - November
Vase Life With its stems seared in boiling water, it makes a jolly bunch of flowers.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest

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Penstemon 'Heavenly Blue' reviews

* * * * * Average based on 2 reviews
Harbinger of Summer

* * * * *

Reviewed 26th May 2017 by MW

Further to my last review (I made a mistake in the first sentence, the fence is east-facing, not west), I'd just like to note that these came out earlier again, around 22nd May they started to emerge and are now almost in full flower. I just went out to enjoy them again and the bumblebees were loving them. They didn't flower that long last year but this time I will cut lots of flowers for the house, so should get repeat flowerings. I planted the three plants together (with the correct spacing) but next year I think I'll lift and divide, I may also try taking cuttings in July. "Blackbird" doesn't look so healthy and flowered later last year, it's probably too dark, I'll move that to my red flower bed.

Easy and lovely

* * * * *

Reviewed 10th June 2016 by MW

I planted three plants last Autumn (in front of a west-facing fence in a sheltered position), did nothing to them and they're in bloom now (Llangollen, half-way up a hillside, it has been hot and dry for a fortnight) standing about 40cm tall. Talk about easy gardening, though I understand I'll have to prune in spring. My soil is very free-draining, I added a bit of manure. It has been in flower for at least three days, I spotted it from a distance and thought it was forget-me-not but up close it's lovely, sky blue with hints of violet. It sort of reminds me of the Mediterranean, or maybe it's just the weather, I hope it likes it when we're having a more British summer. It has delicate bells and a semi-wild look I prefer. It's part of a bed I have to fill up opposite the bedroom windows and I want in restful purples, graduating from blue to reddish. I think having this success will give me the motivation to tidy it up and do some more planting. The blackbird penstemons aren't out yet, they are a bit more exposed to easterly/north winds in their position.
I'll be delighted if they last through the autumn and come back year after year. £6.50 well spent I'd say!