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Oxeye Sunflower

Heliopsis helianthoides

Oxeye sunflower has similar flowers to its true sunflower cousins and blooms for around two months. The large blooms are so vibrantly orange-yellow that they seem to glow at the end of an early summer evening. A tall, robust plant that can fill in empty spots or be held in check by removing seedlings or deadheading. Adaptable to most garden situations and can handle moist and drier sites, clay, and poor soils. May develop white or orange spots some years, but this will not harm the plants.

Details

Height36” - 72”
Spread18"
Bloom SeasonJune – September
Soil Types
clayClay
loamLoam
sandSand
Soil Moisture
dryDry
mediumMedium
moistMoist
Sun Exposure
partSunPart Sun
fullSunFull Sun

Range Map

Available
Not available

Ecological Benefits

Maintenance Tips

Chelsea Chop can be used in late spring to check height and improve bloom count

Staking plants may help if stems flop

Deadheading spent blooms can be used to reduce seeding and prolong blooms

Seedlings can be removed in spring to prevent spread

Established plants can be divided and transplanted to control size and improve vigor

May occasionally host mild leaf diseases - division and spacing of plants can releive this pressure

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