Arikara

Sunflower

95d to harvest

Warm, golden faces rise with a regal, sun-catching presence—Arikara’s blooms bring a rich, honeyed depth of color and a sturdy, upright confidence to the garden. The seeds develop in substantial, well-filled heads, offering a satisfying, nutty richness prized for seed oil and for saving as an heirloom staple. A non-GMO treasure for pollinators, Arikara rewards attentive growers with bold, long-season performance through 95 days to maturity.

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jul 29th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	95
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	55
Min Night Temp (°F)	35
Harden Off (days)	Not Required

Recommended Companions

Fiesta Corn

Moonsong Deep Orange Marigold

Rainbow Corn Corn

Fireball Marigold

Frequently Asked Questions

What pest or disease most commonly affects Helianthus annuus (sunflower), and how can I manage it?

Powdery mildew is a frequent issue on sunflower (Helianthus annuus), showing up as a white, dusty coating on leaves during warm, humid spells. Improve airflow by spacing plants properly and removing heavily infected lower leaves; water at the soil line instead of overhead to keep foliage dry. If it’s spreading, treat early with a labeled fungicide for powdery mildew on vegetables/ornamentals, following the label rate and reapplication timing.

How do I tell when Helianthus annuus is ready to harvest (seeds/heads)?

Harvest when the back of the flower head turns yellow to brown and the bracts (the “petals” around the back) are mostly dried, with the seeds appearing plump and mature. The seeds should be firm and well-developed at the edges of the head, and many should be loose enough to rub or pick without tearing the head. For best quality, cut heads and dry them further in a well-ventilated area until the seeds are fully hard.