Resinous Sunflower Helianthus resinosus
Other Common Name(s):
- Phonetic Spelling
- hee-lee-AN-thus res-in-OH-sus
- Description
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Resinous Sunflower is a wildflower native to several southeastern states. It can be found growing along roadsides, in pine woodlands, mixed hardwood forests, and thickets.
Each stem, that can grow up to 8' in height, will produce one head or multiple heads, up to 5. Each head has 10 to 20 yellow ray petals which are the outer larger petals and over 90 yellow disc flowers, the tiny innermost flowers.
Self-seeding can expand your garden with this large perennial for years. It will also multiply by underground suckers. The suckers can be shared with other gardeners. Once they have become established, a small trowel can be used to dig them up. Repot them, giving them time to establish a root system before replanting.
This plant is sometimes mistakenly sold under the name Helianthus Tomentosus Michaux.
Insects, Diseases, and Other Plant Problems: Can spread through suckers.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Tags:
- Cultivars / Varieties:
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Attributes:
- Genus:
- Helianthus
- Species:
- resinosus
- Family:
- Asteraceae
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- Southeast USA
- Distribution:
- AL, FL, GA, MS, NC, SC
- Wildlife Value:
- The seeds from the flower heads are a winter food source for birds and small mammals. Butterflies and bees are attracted to the many disc flowers. Flowers provide nectar to pollinators from July until the first frost. This is a larval host plant that supports Silvery Checkerspot (Chlosyne nycteis). The Silvery Checkerspot has at least 1-2 broods in the north from June-July in the deep south and Texas, they have as many as 3-4 broods from May through September.
- Play Value:
- Attractive Flowers
- Attracts Pollinators
- Buffer
- Colorful
- Textural
- Wildlife Food Source
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Whole Plant Traits:
- Plant Type:
- Herb
- Native Plant
- Perennial
- Wildflower
- Habit/Form:
- Erect
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Drainage:
- Moist
- Occasionally Dry
- Available Space To Plant:
- 12 inches-3 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
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Fruit:
- Display/Harvest Time:
- Fall
- Summer
- Fruit Type:
- Achene
- Fruit Description:
- Displays from July to November
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Inflorescence:
- Head
- Flower Value To Gardener:
- Showy
- Flower Bloom Time:
- Fall
- Summer
- Flower Petals:
- 7 - 20 petals/rays
- Flower Size:
- > 6 inches
- Flower Description:
- Blooms from June to October with large, 6" heads with 10 to 20 petals and 90+ small disc flowers in the center.
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Leaves:
- Leaf Color:
- Green
- Leaf Arrangement:
- Alternate
- Opposite
- Leaf Shape:
- Lanceolate
- Ovate
- Leaf Margin:
- Entire
- Serrate
- Hairs Present:
- Yes
- Leaf Description:
- The foliage is covered by stiff hairs inside small glands. The veined foliage is a deep green color and also stiff. They are opposite on the lower portion of the stem and alternate above.
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Stem:
- Stem Color:
- Purple/Lavender
- Stem Is Aromatic:
- No
- Stem Description:
- The stems are unbranched below the flower.
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Landscape:
- Landscape Theme:
- Butterfly Garden
- Pollinator Garden
- Attracts:
- Butterflies
- Pollinators
- Small Mammals
- Songbirds
