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frostdate name logo in white

When to Plant Purple Bell Vines in Fort Collins, CO

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 earliest that you can plant purple bell vines in Fort Collins should be determined by using the USDA zone info.


Planting Calendar for Purple Bell Vines

Frost tolerance for purple bell vines: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Since purple bell vines do ok in moderate cold you can plant them slightly earlier in the year than other frost tender plants.

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

The earliest that you can plant purple bell vines in Fort Collins is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant purple bell vines and expect a good harvest is probably August. You probably don't want to wait any later than that or else your purple bell vines may not have a chance to grow to maturity. If you are starting your purple bell vines indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Fort Collins is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Fort Collins you get a frost after April 15 be ready to cover your purple bell vines if you have a surprise late frost.

USDA Zone Info for Fort Collins

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 Fort Collins

You may be interested in your other planting guides for Fort Collins.