One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

A way of determining when you can plant cauliflower is to examine the USDA zone info for Guymon.

Planting Calendar for Cauliflower

Frost tolerance for cauliflower:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since cauliflower do well in moderate cold you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant cauliflower in Guymon 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 cauliflower and expect a good harvest is probably September. If you wait any later than that and your cauliflower may not have a chance to grow to maturity. If you are starting your cauliflower indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Guymon the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Guymon is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Guymon last frost occurs after April 15 so make sure that you are prepared to cover your cauliflower in the event of a late frost.

USDA Zone Info for Guymon

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Guymon

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