One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to estimate when to plant sweet corn by checking out the USDA zone info for Sulphur.

Planting Calendar for Sweet corn

Frost tolerance for sweet corn:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sweet corn do ok in mild cold which means that you can plant them a bit earlier in the year than more sensitive plants.

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

The last month that you can plant sweet corn and expect a good harvest is probably August. If you wait any later than that and your sweet corn may not have a chance to fully mature. Starting your sweet corn indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Sulphur. It might get as low as 5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Sulphur is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Sulphur it frosts late in the year after April 15 be ready to cover your sweet corn in the event of one of those late frosts.

USDA Zone Info for Sulphur

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Sulphur

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