Sunflower
Helianthus annuus
Last reviewed: August 2026
Helianthus annuus (Sunflower) is a native annual forb found in Arizona, California, Nevada, and Washington that blooms from July through September. This drought-tolerant wildflower attracts bees, butterflies, and beetles with its bright yellow flower heads.
Toxicity unknown
Sunflower (Helianthus annuus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
The USDA PLANTS Database (opens in new tab) does not flag Sunflower as toxic to livestock.
Light
full sun
Water
medium
Size
24"–120" H × 12"–36" W
Bloom
Jul, Aug, Sep
Native to
AZ, CA, NV, WA
Pollinators
bees, butterflies, beetles
Before you buy
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Sunflowers are tall, cheerful annuals with large yellow blooms that follow the sun throughout the day. These iconic plants can reach up to 10 feet tall and produce edible seeds that birds love. They bloom from summer into early fall and need to be replanted each year.
Growing Sunflower
Grow Sunflower in full sun and medium water. Mature plants reach 24 to 120 inches tall and spread 12 to 36 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Sunflower takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Extremely tall growth appears too wild for front yards
- Can look messy as flowers fade and stalks brown
- May be perceived as agricultural rather than ornamental
Wildlife value
Host plant for painted lady butterfly, sunflower moth.
Sunflowers are excellent pollinator magnets, attracting bees, butterflies, and beetles to their large flower heads. The seeds provide important fall and winter food for birds like finches and chickadees.
Common questions
- When do native sunflowers bloom?
- Helianthus annuus blooms from July through September in its native western range.
- What pollinators visit native sunflowers?
- Native sunflowers attract a diverse array of pollinators including bees, butterflies, and beetles.
- Where are sunflowers native in the United States?
- Helianthus annuus is native to Arizona, California, Nevada, and Washington in the western United States.
- What growing conditions do native sunflowers prefer?
- Native sunflowers thrive in full sun conditions and are adaptable to various moisture levels from dry to moderately wet soils.
- Is Sunflower toxic to livestock?
- The USDA PLANTS Database does not flag Sunflower as toxic to livestock.
- Is Sunflower HOA-friendly?
- Sunflower takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Sunflower? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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