Crop guide
How to grow sunflowers
How to grow sunflowers means matching cited identity and spacing notes to your bed, keeping sources separate by geography. There is no single trick.
Growing guidance is general information. Timing, spacing, and care depend on cultivar, weather, soil, and local conditions. Check the sources and adjust the plan for your garden.
Steps (range, not a promise)
- 01Read cited names and spacing — they are not one BioArva average.
- 02Match spacing notes to the sheet for your geography.
- 03Log the bed so next season is not a guess.
Sunflowers in a home garden bed.
The season, on your ground
Save this bed — freeWhat the sources say — at a glance
One source per card. Facts are not averaged.
UMN Extension (Minnesota)
Helianthus annuus annual. One inch deep. 6 in / 1 ft / 2 ft. Full sun.
Details and limits (4)
Types
UMN Extension (Minnesota): sunflowers (Helianthus annuus) are an annual. Used as ornamental plants and harvested for seeds.
Spacing
UMN Extension (Minnesota): plant seeds one inch deep. For varieties that are 2 to 5 feet tall, leave about 6 inches between them. Space taller sunflowers at least 1 foot apart and giant sunflowers 2 feet apart.
Sun
UMN Extension (Minnesota): sunflowers enjoy full sun.
Limit
Minnesota sunflowers sheet. Identity, spacing, and sun only.
Make it yours
Save the bed in the Field Book so next season is not a guess.
Sources differ
Verified suppliers only
No supplier on this page
When a partner is listed, it will be outbound and disclosed. Nothing to buy here. Fertilizer, soils, and pesticides stay off this slot.
What to record in the Field Book
Save the bed with the crop and the date. You may add a photo and notes. Compare entries you have recorded with each other — not with a diagnosis from this page. If you want an identification, bring the record to local Extension.
How we know — methodology. Ranges and assertions are cited per source, not blended.