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botanical name:
Halimium calycinum
Halimium calycinum © Deeproot Plant Base
common name:  Sun Rose, Rock Rose
synonyms:  Halimium commutatum, Halimium libanotis, Helianthemum commutatum,
family:  Cistaceae
characteristics: shrub, evergreen
height: 0.50m
width: 0.80m
growth rate: slow
growth habit: bushy
leaf colour: dark green
flower colour: yellow
main season: Summer
aspect: full sun
conditions: dry soil, sandy soil, coastal
preferred soil pH: any
minimum temp: -4°C
USDA zone: 9 to 10
Low growing, freely branching shrub with tiny, evergreen, linear leaves and pale or bright yellow flowers in June. Can be affected by severe frosts.

Best in well drained, poor to moderately fertile, sandy soil in full sun. Not very hardy and needs a warm sheltered position.

other notes:
Found wild on the coastal sands of Portugal and Spain.
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