One of the best tools that you have as gardeners to help us estimate 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.

The USDA zone info for Caldwell can be used to estimate when it's a good idea to plant evolvulus.

Planting Calendar for Evolvulus

Frost tolerance for evolvulus:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

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

The earliest that you can plant evolvulus in Caldwell 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. Starting your evolvulus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Caldwell. In the coldest months of winter you can expect an average low temperature of -5°F.

Always keep in mind that USDA zone info for Caldwell is just an average and the actual date of last frost will vary from year to year. Half of the time in Caldwell you get a frost after April 15 so make sure that you are ready to protect your evolvulus in the event of a late frost.

USDA Zone Info for Caldwell

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 Caldwell

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