|Grow as a houseplant or under heated glass.
|10 to 15C+
|Indoor / Outdoor
|Grow indoors, or outdoors in summer in a sheltered spot
|5 to 10C
|Grow outdoors in summer, and in a heated glasshouse in winter.
|1 to 5C
|Grow outdoors or under glass without risk of frost.
|-5 to 1C
|Hardy in coastal/mild/sheltered areas. Will not tolerate hard/sudden frost. May require winter protection in situ. such as fleece or straw mulch.
|-10 to -5C
|May suffer at altitude, central/northerly locations, harsh winters, cold gardens and when grown in pots.
|-15 to -10C+
|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.
|-20 to -15C
|Will survive severe winter, but may need protection when grown in pots.
|-20C & Colder
|Very Hardy / Hardy
|in the severest European climates.
5 In stock
Originating from western and southern Mediterranean
White felty shoots open to glossy dark green leaves, white beneath. This variety has deep blue flowers, more intense in colour than the species, and are loved by bees and other pollinators. It’s evergreen, and although the flowers are long-lasting over summer, when it has finished flowering it can be clipped to maintain a compact shrub that has all-year-round interest, or it can be grown as a low hedge.
Grow in full sun in soil that is sharply drained.
Height and spread after 5 years 1 – 1.5m
Eventual mature plant size :