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Penstemon 'Sour Grape' (Penstemon 'Sour Grape')

Beginner
skill rating
2 hours care
per year
1m
Max height
0.5m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Penstemon 'Sour Grape'

Other names

Penstemon 'Sour Grape'

Genus

Penstemon Penstemon

Variety or Cultivar

'Sour Grape' _ 'Sour Grape', a P. hirsutus hybrid, is an upright perennial with lush foliage and grape-colored flowers from early summer.


Penstemon 'Sour Grape' is: Semi evergreen

Habit

Clump-forming, Erect

Awards

RHS AGM (Award of Garden Merit)

Flower

Purple in Summer

Foliage

Bright-green, Green in Summer

How to care

Watch out for

Specific pests

Glasshouse red spider mite , Leaf and bud eelworms , Slugs , Snails Glasshouse red spider mite , Leaf and bud eelworms , Slugs , Snails

General care

Pruning

Deadhead after flowering to maintain the plant's strength. Cut the plant right back to its base in early spring.

Propagation methods

Division, Semi-hardwood cuttings, Softwood cuttings


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Where to grow

Penstemon 'Sour Grape' (Penstemon 'Sour Grape') will reach a height of 1m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, Bees (attract & feed bees), Cottage/Informal, Wildlife

Cultivation

Plant in fertile, well-drained soil in full sun or part shade. Protect plant in winter with dry winter mulch.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Tender in frost (H3), Hardy (H4)

Companion plants

Botanical name

Penstemon 'Sour Grape'

Other names

Penstemon 'Sour Grape'

Genus

Penstemon Penstemon

Variety or Cultivar

'Sour Grape' _ 'Sour Grape', a P. hirsutus hybrid, is an upright perennial with lush foliage and grape-colored flowers from early summer.

Foliage

Semi evergreen

Habit

Clump-forming, Erect

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Purple in Summer

Foliage

Bright-green, Green in Summer


How to care

Watch out for

Specific pests

Glasshouse red spider mite , Leaf and bud eelworms , Slugs , Snails

General care

Pruning

Deadhead after flowering to maintain the plant's strength. Cut the plant right back to its base in early spring.

Propagation methods

Division, Semi-hardwood cuttings, Softwood cuttings


Monthly care advice


Where to grow

Penstemon 'Sour Grape' (Penstemon 'Sour Grape') will reach a height of 1m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, Bees (attract & feed bees), Cottage/Informal, Wildlife

Cultivation

Plant in fertile, well-drained soil in full sun or part shade. Protect plant in winter with dry winter mulch.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Tender in frost (H3), Hardy (H4)

USDA zones

Zone 10, Zone 9

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Tender in frost (H3), Hardy (H4) Tell us...

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wildlife friendly

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