Dichroa 'Long March'

Hardiness - H4 (see below for more information)

Flowering period: summer

Eventual height/spread: 100cm/50cm

Hardiness ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets. 

Hardiness is also dependent on soil type and plant maturity. Borderline hardy Salvia (H2/H3) are less likely to survive winter in wet, heavy soils when combined with periods of prolonged freezing below -5c. If purchased late in the year, less hardy Salvia (H2-H4) will need to be protected from freezing until a full year of good growth has been produced.

H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)

H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)

H4: hardy through most of the UK (-10 to -5)

H5: hardy in most places throughout the UK even in severe winters (-15 to -10)

H6: hardy in all of UK and northern Europe (-20 to -15)