When to Plant Sunflowers in New Mexico
Few things bring more joy than a row of sunflowers turning their faces to the sun. Easy, dramatic, and pollinator-friendly.
The Short Answer
New Mexico Frost Dates
Your planting dates depend on which part of New Mexico you're in. Here are the frost date ranges by region:
| Region | Zones | Last Frost (Spring) | First Frost (Fall) |
|---|---|---|---|
| Northern New Mexico | 4a, 4b, 5a, 5b | May 5 - May 25 | Sep 15 - Oct 5 |
| Central New Mexico (Albuquerque) | 7a, 7b | Apr 1 - Apr 20 | Oct 15 - Nov 5 |
| Southern New Mexico | 7b, 8a, 8b | Mar 15 - Apr 5 | Oct 25 - Nov 15 |
Sunflowers Planting Schedule for New Mexico
Northern New Mexico (Zones 4a, 4b, 5a, 5b)
Average last frost: May 5 - May 25 · Average first frost: Sep 15 - Oct 5
Central New Mexico (Albuquerque) (Zones 7a, 7b)
Average last frost: Apr 1 - Apr 20 · Average first frost: Oct 15 - Nov 5
Southern New Mexico (Zones 7b, 8a, 8b)
Average last frost: Mar 15 - Apr 5 · Average first frost: Oct 25 - Nov 15
Growing Sunflowers in New Mexico
Sunflowers in New Mexico's Climate
Sunflowers handle extreme heat well — they're one of the few ornamental flowers that actually improve with more sun and warmth. In the desert, plant in early spring before extreme heat arrives. In subtropical Florida, sunflowers grow best during the drier, cooler months from October through March.
Soil Considerations for New Mexico
Alkaline desert soils. Low organic matter. Caliche layers common. Heavy amendment with compost essential. Make sure soil has warmed to at least 55°F before planting sunflowers outside.
New Mexico Climate & Growing Season
High desert climate. Intense sun. Low humidity. Wide temperature swings day to night. Irrigation essential. Sunflowers cannot tolerate any frost, so wait until all frost danger has passed before transplanting outside. Watch local forecasts carefully in spring.
Growing season length varies across New Mexico: Northern New Mexico (4a, 4b, 5a, 5b) has a last frost around May 5 - May 25, while Southern New Mexico (7b, 8a, 8b) sees frost end around Mar 15 - Apr 5. This difference matters for sunflowers — transplant timing shifts by several weeks across the state.
Growing Tips
Direct sow is preferred — sunflowers don't love transplanting. Succession plant every 2 weeks for blooms all summer.
Companion Planting
Plant sunflowers alongside these companions for better growth:
Keep sunflowers away from:
The Bottom Line
Last reviewed: March 29, 2026