One of the first steps you take when you are making a decision about 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.

The earliest that you can plant cauliflower in Glenwood Springs should be determined by using the USDA zone info.

Planting Calendar for Cauliflower

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

Since cauliflower are moderately cold tolerant you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant cauliflower in Glenwood Springs 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. 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 little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Glenwood Springs. You can expect an average low temperature of -10°F in the coldest months of winter.

Always keep in mind that USDA zone info for Glenwood Springs is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Glenwood Springs there is a last frost after April 15 be ready to cover your cauliflower in the event of a surprise late frost.

USDA Zone Info for Glenwood Springs

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 Glenwood Springs

You may be interested in your other planting guides for Glenwood Springs.