When to Plant Corn in Downey, CA

The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Downey should be reffered to in order to determine when to plant corn.


Planting Calendar for Corn

Frost tolerance for corn: Not tolerant of frost.
When to plant: After the last frost.

It's not a good idea to plant corn until after the last frost has passed because they do not do well in cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant corn
Possibly ok, but a risky time to plant corn
Probably not a good time to plant corn

The earliest that you can plant corn in Downey is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant corn and expect a good harvest is probably September. You probably don't want to wait any later than that or else your corn may not have a chance to grow to maturity. You can get started a little bit earlier by starting your corn indoors.

Last Frost Date

The average date of last frost is January 31 in Downey. It might get as low as 35°F during the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Downey and it will vary from year to year. Since half of the time in Downey last frost occurs after January 31 be ready to cover your corn in the event of one of those late frosts.

USDA Zone Info for Downey

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)January 31
Average Date of First Frost (fall)December 15
Lowest Expected Low35°F
Highest Expected Low40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Downey

You may be interested in your other planting guides for Downey.