The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of getting a good idea when it's the best time to plant bell peppers is to look at the USDA zone info for Longmont.

Planting Calendar for Bell Peppers

Frost tolerance for bell peppers:	Not tolerant of frost.
When to plant:	After the last frost.

Bell Peppers are not cold tolerant which means that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant bell peppers in Longmont 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 bell peppers and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bell peppers may not have a chance to fully mature. If you are starting your bell peppers 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 Longmont. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Longmont is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Longmont you get surprised by a frost after April 15 so make sure that you are ready to cover your bell peppers if you have a surprise late frost.

USDA Zone Info for Longmont

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 Longmont

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