When to plant green beans in zone 9a
In zone 9a, where the last spring frost typically comes around March 2, sow outdoors March 14 to 28. For a fall crop, plant September 3 to 10.
The zone 9a schedule for green beans
- Sow outdoors
- March 14 to 28
- Soil warm enough (60°F), about
- March 14
- Safest planting date (10% frost risk)
- March 25
- First harvest, roughly
- May 3 to June 6
- Plant for a fall crop
- September 3 to 10
From the median frost dates of the NOAA stations assigned to the 1,736 ZIP codes in zone 9a, and the timing recommended by Cooperative Extension guides for green beans.
Frost risk in zone 9a
Zones are based on winter cold, not on frost dates, so the last spring frost varies a lot within a zone. Across zone 9a, the typical last frost ranges from about February 13 in the earliest tenth of ZIP codes to March 21 in the latest tenth, and the first fall frost from November 14 to December 9. For a typical place in the zone:
- February 4Risky: a later frost happens in 9 years out of 10
- March 2Typical: frost after this date in half of years
- March 25Safe: a later frost only 1 year in 10
Green Beans are killed by frost, so if you want to be safe, plant out after the safe date rather than the typical one, or be ready to cover plants on a cold night.
Your dates for green beans
Set your ZIP code at the top of the page and we will work out when to plant green beans where you live, from the frost records of the nearest NOAA weather station. Your ZIP code is remembered on this device only.
Green Beans in zone 9a cities
| City | Typical last frost | Plant | Fall |
|---|---|---|---|
| Austin, TX | Feb 20 | Mar 5 to 19 | Sep 10 to 17 |
| Seattle, WA | Mar 8 | Jun 6 to 20 | — |
| Portland, OR | Mar 13 | May 19 to Jun 2 | — |
| Tucson, AZ | Feb 5 | Mar 8 to 22 | Sep 16 to 23 |
| North Las Vegas, NV | Jan 20 | Mar 13 to 27 | Sep 22 to 29 |
| Baton Rouge, LA | Feb 25 | Mar 6 to 20 | Sep 3 to 10 |
| Tallahassee, FL | Mar 11 | Mar 11 to 25 | Aug 29 to Sep 5 |
| Mobile, AL | Feb 21 | Mar 7 to 21 | Sep 13 to 20 |
| Palmdale, CA | Mar 10 | Apr 14 to 28 | Aug 27 to Sep 3 |
| Charleston, SC | Feb 4 | Mar 22 to Apr 5 | Oct 7 to 14 |
| Savannah, GA | Mar 2 | Mar 16 to 30 | Sep 7 to 14 |
| Gainesville, FL | Mar 3 | Mar 3 to 17 | Sep 9 to 16 |
How to grow green beansAll zonesGreen Beans in zone 8bGreen Beans in zone 9bAbout zone 9a
Sources
- How to Grow Beans in Your Garden · Utah State University Extension
- Growing Beans in a Home Garden · University of Maryland Extension
- Florida Vegetable Gardening Guide (SP103/VH021) · University of Florida IFAS Extension
- Vegetable Planting Calendar for Maricopa County (AZ1005) · University of Arizona Cooperative Extension
- Home Garden Beans (HGV-8) · University of Hawaii CTAHR
- GN 154: Soil Temperature Conditions for Vegetable Seed Germination (Harrington emergence table) · UC Cooperative Extension, Sacramento County (UC ANR)
- The Fall Vegetable Garden (HO-66-W) · Purdue University Extension
- Fall Vegetable Gardening (SPES-801) · Virginia Cooperative Extension
- Vegetable Gardening in Containers · Texas A&M AgriLife Extension
- Growing Vegetables in Containers · University of Wisconsin-Madison Extension