When to Plant Bell Peppers in Westminster, CO

One of the best tools that you have as gardeners to help us determine 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 best time to plant bell peppers in Westminster should be determined by reviewing the USDA zone info.


Planting Calendar for Bell Peppers

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

Since bell peppers do not do well in cold weather it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant bell peppers
Possibly ok, but a risky time to plant bell peppers
Probably not a good time to plant bell peppers

The earliest that you can plant bell peppers in Westminster 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. If you wait any later than that and your bell peppers may not have a chance to fully mature. You can get started a little bit earlier by starting your bell peppers indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Westminster. It might get as low as -15°F during the coldest months of winter.

It's important to remember that USDA zone info for Westminster is not always accurate and the actual date of last frost is different every year. Since half of the time in Westminster you get a frost after April 15 be ready to cover your bell peppers in the event of a late frost.

USDA Zone Info for Westminster

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 Westminster

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