Heliopsis, False Sunflower, Orange Sunflower, Ox-Eye, Rough Heliopsis 'Summer Nights'

Heliopsishelianthoides var. scabra

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Heliopsis (hee-lee-OP-sis)
Synonym
Heliopsis helianthoides subsp. scabra
Heliopsis minor
Heliopsis scabra
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
36-48 in. (90-120 cm)
Spacing
24-36 in. (60-90 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Denver, Colorado

Seymour, Connecticut

Chadwick, Illinois

Machesney Park, Illinois

Lorette, Manitoba

Wakefield, Massachusetts

Hamilton, Ohio

Harrisburg, Pennsylvania

Hendersonville, Tennessee

show all

Featured Videos

Gardener's Notes:

3
positives
0
neutral
0
negative
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C
Hamilton, OH (Zone 6a) | July 2014 | positive

Summer Nights is a great back of the border plant. It blooms profusely during the period between the peonies and daylilies. The purple ...Read More

L
Lorette, MB (Zone 3b) | June 2011 | positive

Overwintered well in zone3b , open area, and in fairly heavy clay soil.

I
Wakefield, MA | January 2011 | positive

I enjoyed this plant very much. First of all, the purplish red stems and leaves in spring were lovely, especially next to my dark purple...Read More

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