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Heavenly Blue

Penstemon | Beardtongue - Heavenly Blue

£6.00

Plant profile · availability to be confirmed

Discover the effortless charm of Penstemon 'Heavenly Blue,' an easy-to-grow perennial that delivers vibrant blue, lilac, and purple blooms from May through August. This compact, semi-evergreen clump-former thrives in borders and coastal gardens with minimal fuss, flourishing in sun to dappled shade and reaching a neat 40cm in both height and spread. Perfect for cottage gardens and front borders, this hardy, low-maintenance beauty combines year-round foliage interest with extended seasonal color—all at an affordable price point.

A CLOSER LOOK

Plant details.

LifecyclePerennial
HabitBushy
Foliage typeSemi Evergreen

Suitability: Borders, Coastal gardens, Cottage gardens, Cut flower gardens, Gravel gardens, Rockery, Wildlife gardens, City and courtyard gardens, Wall-side borders
Position: Border | Front, Cutting Garden
Light: Full sun, Partial shade
Soil moisture: Free draining, Moist
Soil acidity: Neutral, Acid, Alkaline
Soil type: Chalk, Loam, Sandy
Hardiness: H4 [-10 to -5ºC] Hardy | Average winter
Time to maturity: 2–5 Years
Exposure: Sheltered
Mature height: 0.1–0.5 m
Mature spread: 0.1–0.5 m
Foliage colour: Green
Flower colour: Blue, Lilac, Pink, Purple
Growing skill: Easy
Genus: Penstemon | Beardtongue
Aspect: South, West

Through the seasons

A year at a glance

Flowering

May–Aug

In leaf

All year

Filled months show recorded activity. Timing can vary with climate and growing conditions; unfilled months are not recorded.

GETTING TO KNOW YOUR PLANT

A happy plant
starts here.

Every plant grows a little differently. Your new arrival’s shape and size may vary from the photograph.

Growing conditions+

Position: Full sun, Partial shade. Soil: Moist but well-drained or Well-drained.

Winter hardiness+

RHS rating: H4 (UK growing conditions). See the source profile for cultivation advice.

Plant information sources+

Growing details checked against the sources below. Ultimate size depends on growing conditions.

RHS · Penstemon 'Heavenly Blue'

THE GREENHOUSE JOURNAL

Life with Heavenly Blue.

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Heavenly Blue