Penstemon ‘Blackbird’

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Penstemon ‘Blackbird’

Beard tongue

Code Temp Category Description
1 15C+ Indoor Grow as a houseplant or under heated glass.
2 10 to 15C+ Indoor / Outdoor Grow indoors, or outdoors in summer in a sheltered spot
3 5 to 10C Tender Grow outdoors in summer, and in a heated glasshouse in winter.
4 1 to 5C Tender Grow outdoors or under glass without risk of frost.
5 -5 to 1C Half-Hardy Hardy in coastal/mild/sheltered areas. Will not tolerate hard/sudden frost. May require winter protection in situ. such as fleece or straw mulch.
6 -10 to -5C Hardy May suffer at altitude, central/northerly locations, harsh winters, cold gardens and when grown in pots.
7 -15 to -10C+ Hardy Will survive most severe winters but may be at risk in central/northerly locations and in pots. Top growth may be destroyed but will usually re-grow.
8 -20 to -15C Hardy Will survive severe winter, but may need protection when grown in pots.
9 -20C & Colder Very Hardy / Hardy in the severest European climates.

£10.99

Pot Size:

3Ltr

|

2 In stock

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SKU: 98453005
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Description

Family Plantaginaceae
Originating from N. America and E. Asia

A semi-evergreen perennial with an upright habit bearing dark purple tubular flowers on reddish stems. Lovely cut flower and bees love it.
Grow in fertile, moist but well-drained soil in sun/part shade. Mulch in winter.

Eventual mature plant size :
Height 75cm
Spread 30cm

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