Before planting it is a good idea to find your USDA Zone info to figure out your garden 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 Littleton should be read to determine when it's a good idea to plant coral bells.

Planting Calendar for Coral Bells

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

Coral Bells do well in moderate cold which means that you can start planting them earlier than other plants that might not handle the cold.

The earliest that you can plant coral bells in Littleton 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 coral bells and expect a good harvest is probably September. Any later than that and your coral bells may not have a chance to really do well. Starting your coral bells 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 Littleton. In the coldest months of winter you should expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Littleton may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Littleton you get a frost after April 15 so just be sure to be ready to cover your coral bells in the event of a surprise late frost.

USDA Zone Info for Littleton

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 Littleton

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