The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Thornton can be reffered to in order to estimate when to plant painted tongues.

Planting Calendar for Painted Tongues

Frost tolerance for painted tongues:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Painted Tongues require warm weather which means that you have to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant painted tongues in Thornton 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 painted tongues and expect a good harvest is probably August. If you wait any later than that and your painted tongues may not have a chance to really do well. You can get started a couple of weeks earlier by starting your painted tongues indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Thornton. In the coldest months of winter you can expect an average low temperature of -15°F.

Always keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Thornton and it will vary from year to year. Since half of the time in Thornton you get surprised by a frost after April 15 be ready to protect your painted tongues if you have a late frost.

USDA Zone Info for Thornton

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 Thornton

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