Arikara

Family: Asteraceae Oilseed and ornamental annual

Planting Schedule

Provide your location or planting zone to unlock dates and add Arikara to a garden.

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.

Light: Full SunMaturity: 95 DaysHabit: Upright

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Arikara Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Direct Sow	May 25th	Aug 28th – Aug 29th
Zone 2b	Direct Sow	May 15th	Aug 18th – Aug 25th
Zone 3a	Direct Sow	May 15th	Aug 18th – Sep 1st
Zone 3b	Direct Sow	May 19th	Aug 22nd – Sep 21st
Zone 4a	Direct Sow	May 15th	Aug 18th – Sep 24th
Zone 4b	Direct Sow	May 13th	Aug 16th – Sep 27th
Zone 5a	Direct Sow	May 8th	Aug 11th – Sep 30th
Zone 5b	Direct Sow	May 4th	Aug 7th – Oct 5th
Zone 6a	Direct Sow	May 1st	Aug 4th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jul 29th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jul 24th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jul 14th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	Jul 5th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	Jun 26th – Nov 12th
Zone 9a	Direct Sow	Mar 6th	Jun 9th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	May 15th – Dec 9th
Zone 10a	—	Oct 1st	Jan 4th – Feb 28th
Zone 10b	—	Oct 1st	Jan 4th – Feb 28th
Zone 11a	—	Oct 1st	Jan 4th – Feb 28th
Zone 11b	—	Oct 1st	Jan 4th – Feb 28th
Zone 12a	—	Oct 1st	Jan 4th – Feb 28th
Zone 12b	—	Oct 1st	Jan 4th – Feb 28th
Zone 13a	—	Oct 1st	Jan 4th – Feb 28th
Zone 13b	—	Oct 1st	Jan 4th – Feb 28th

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

Culinary Notes

Chef's Note

Arikara seeds lean warm and sunflower-bright—roast them until they go aggressively fragrant and the kernels stay pleasantly crisp. Because the oil is the point (not a watery kernel), this is a seed you use for texture and flavor punch: toast, grind, or dress, then finish with something acidic to keep it from getting heavy.

Best Uses

roasted seeds for snacking or topping salads
cold-pressed style seed oil for vinaigrettes and finishing
baking into hearty bread doughs and granola for crunch
seed paste/tahini-style spread when finely ground

Flavor Profile

toasty nutty flavor rich, oily mouthfeel gentle bitterness on the finish

Kitchen Pairings

lemon garlic honey dark chocolate plain yogurt smoked salt

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 often should I water Helianthus annuus during the main growing phase, and what soil moisture level should I maintain?

During active growth and before seed fill, water deeply about 1–2 times per week, aiming to keep the top 2–3 inches of soil evenly moist but not soggy. In hot weather, you may need more frequent watering, but always let the soil surface dry slightly between waterings to prevent root stress. Once plants begin forming seed heads, switch to steady deep watering (roughly 1 inch per week total from rain and irrigation) to support consistent seed development.

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.