Heliopsis helianthoides var. scabra, commonly called ox eye, is an upright, clump-forming, nearly glabrous, sunflower-like, short-lived perennial that is native to eastern and central North America.
'Summer Sun' is a compact, clump-forming, upright cultivar which typically grows up to 90 cm (2-3') tall. Features single to double, daisy-like flowers (5-7 cm (2-3") diameter) with golden yellow rays and deep orange-yellow center disks atop stiff stems that seldom need staking. Noted for its lengthy summer to early fall bloom period. Coarse, serrate, ovate to lanceolate, deep green foliage. Good fresh cut flower.
Var. scabra differs from species plants by having hairy and rough-textured (scabrous) leaves and stems with the leaves being thicker. Upper leaves may be entire with basal leaves toothed. Cultivars of var. scabra are more commonly grown in gardens that the species itself.
Genus name comes from the Greek words helios meaning the sun and opsis meaning resembling in allusion to the rayed yellow flower heads.
Easily grown in average, dry to medium, well-drained soil in full sun. Tolerates drought, but does better if regularly watered. Tolerates wide range of soils, including poor ones. Tolerates some light shade, but plants grown in too much shade tend to require support. Remove spent flowers to extend the blooming season.
This cultivar comes true from seed.
Information source: http://www.missouribotanicalgarden.org
Approximately 70 seeds in 0.5g packet.
Genus - Heliopsis
Species - Helianthoides
Common name - Ox Eye (Summer Sun)
Pre-Treatment - Not-required
Hardiness zones - 3 - 9
Height - 0,80 - 1,20 m
Spread - 0,45 - 0,60 m
Plant type - Perennial flower
Exposure - Full Sun
Growth rate - Fast
Soil PH - Acidic, neutral, alkaline
Soil type - Wide range, including poor
Water requirements - Dry-average
Bloom season - June - August
Leaf / Flower color - Green / Yellow rays and orange-yellow center disks
|Germination||Sow seeds from May to June inside (2-3 seeds in pot) or directly outside in prepared seed bed.|
Do not cover the seed but press into the soil. Keep seed moist until germination.
The best temperature for germination - +20-+25C.
Germination time - 10-14 days