One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Fort Collins you can figure out when it's the best time to plant evolvulus by looking at the USDA zone info.

Planting Calendar for Evolvulus

Frost tolerance for evolvulus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since evolvulus require warm weather it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant evolvulus in Fort Collins is April. However, you really should wait until May if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is April 15 in Fort Collins. In the coldest months of winter you should expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Fort Collins is an average and the actual date of last frost is different every year. Half of the time in Fort Collins it frosts late in the year after April 15 so be sure to be ready to protect your evolvulus in the event of a late frost.

USDA Zone Info for Fort Collins

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Fort Collins

You may be interested in your other planting guides for Fort Collins.