The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when it's a good idea to plant cauliflower by referring to the USDA zone info for Mount Vernon.

Planting Calendar for Cauliflower

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

Cauliflower can survive 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 cauliflower in Mount Vernon 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 really do well. Starting your cauliflower indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Mount Vernon. It might get as low as -10°F during the coldest months of winter.

It's important to remember that USDA zone info for Mount Vernon is just an average and the actual date of last frost changes from year to year. Half of the time in Mount Vernon there is a last frost after April 15 so be sure to be ready to protect your cauliflower if you have a surprise late frost.

USDA Zone Info for Mount Vernon

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Mount Vernon

You may be interested in your other planting guides for Mount Vernon.