Heliopsis helianthoides var. helianthoides

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Wet Mesic
Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 4 to 6 feet
Plant Spread: 3 to 5 feet
Fruit: Edible to birds
Fruiting Time: Late summer or early fall
Fall
Flowers: Showy
Flower Color: Yellow
Bloom Size: 2"-3"
Flower Time: Summer
Uses: Cut Flower
Will Naturalize
Wildlife Attractant: Bees
Birds
Butterflies
Hummingbirds
Resistances: Drought tolerant
Propagation: Other methods: Division
Pollinators: Wasps
Beetles
Moths and Butterflies
Bumblebees
Bees
Various insects
Miscellaneous: Monoecious
Conservation status: Least Concern (LC)

Conservation status:
Conservation status: Least Concern
Image

Photo gallery:
Location: Athol, MADate: 2017-08-19
By joannakat
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Location: near Downingtown, PennsylvaniaDate: 2013-07-05close-up of flowers
By ILPARW
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Location: near Downingtown, PennsylvaniaDate: 2013-07-05plants in bloom in garden
By ILPARW
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Location: Stroud Land Preserve in southeast PADate: 2012-07-22a mass of plants together
By ILPARW
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Location: near Downingtown, PennsylvaniaDate: 2013-07-05a wild patch in bloom
By ILPARW
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Location: Stroud Land Preserve in southeast PADate: 2012-07-22masses in bloom along a path
By ILPARW
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Location: Stroud Land Preserve in southeast PADate: 2012-07-22blooms and foliage
By ILPARW
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Comments:
Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Mar 5, 2018 8:46 PM

The whole species of this Ox-Eye Sunflower or False Sunflower has a large native range from southwest Quebec down into Georgia to New Mexico up into southern Saskatchewan. This Smooth-leaved variety called the Smooth Ox-Eye is found in the East while the rough-leaved variety of "scabra" is found farther west; not that there is any real difference. This makes a good bushy perennial for gardens that is a non-spreading clump, though the natural form may need some staking, especially with some shade. Flowers can be deadheaded to extend the bloom that usually lasts about 8 weeks. It can be divided for propagation. Like other members of the Composite or Aster Family, it has both inner disk florets and outer ray florets that make up the composite flower. Both the ray & disk florets produce seeds called achenes. True Sunflowers have their disk florets only to produce the seeds (achenes), and the similar Silphium (Rosinweeds) have their ray florets produce the seeds. Furthermore, the Ox-Eye ray florets persist on the flower while true sunflower ray flowers will fall off after a time. A good number of native plant nurseries sell the species. Most conventional nurseries sell cultivars of this species, whether Smooth or Rough.

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