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botanical name:
Oenothera macrocarpa
Oenothera macrocarpa © Deeproot Plant Base
common name:  Evening primrose, Ozark sundrops
synonyms:  Oenothera missouriensis
family:  Onagraceae
characteristics: perennial
height: 0.23m
width: 0.60m
growth rate: medium
growth habit: semi-prostrate
leaf colour: green
flower colour: yellow
stem/bark: red & green
main season: Summer
aspect: full sun
conditions: dry soil, sandy soil
preferred soil pH: any
minimum temp: -10°C
USDA zone: 8 to 8
description:
A low growing perennial form of the evening primrose, producing large light yellow flowers over a long period throughout summer. Sprawling, hairy reddish stems and pale to mid green, toothed leaves with white midribs.

cultivation:
Thrives in poor ground.

other notes:
RHS AGM
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