Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to figure out when it's a good idea to plant purple bell vines by checking out the USDA zone info for Lewiston.

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.

Purple Bell Vines are barely cold tolerant which means that you can start planting them slightly earlier than more sensitive plants.

The earliest that you can plant purple bell vines in Lewiston 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. Any later than that and your purple bell vines may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your purple bell vines indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Lewiston. You should expect an average low temperature of 5°F in the coldest months of winter.

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

USDA Zone Info for Lewiston

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Lewiston

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