Oenothera tetragona

Numerous flower shoots without branches in stiffly upright clumps; gradually growing wider with its short rhizomes.

50-60 (90) cm tall, 70-90 cm wide.

Pointy, shiny red buds, white flower funnels, bright golden yellow, in bundles at the ends of reddish, stiff peduncles, June to August; flowers open during the day.

Lanceolate to slenderly elliptical, light bronze green when shooting; basal leaves semi-evergreen in mild areas, reddish.

Sun, tolerates heat, likes warmth, frost hardy.

Moderately dry to fresh, well-drained, humic, sandy or gravelly-loamy.

II