When can I plant Lisianthus in Zone 3a

The USDA Zone info is a great tool for gardeners to help us determine our gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

A way of estimating when it's possible to plant lisianthus is to examine the USDA zone info for Zone 3a.


Planting Calendar for Lisianthus

Frost tolerance for lisianthus: Not tolerant of frost.
When you should plant them: After the last frost when the weather gets warmer.

Lisianthus require warm weather which means that it is necessary to wait until it warms up after the last frost before you can plant them.

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

The earliest that you can plant lisianthus in Zone 3a is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant lisianthus and expect a good harvest is probably August. Any later than that and your lisianthus may not have a chance to fully mature. Starting your lisianthus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Zone 3a. In the coldest months of winter we should expect an average low temperature of -40°F.

It's important to remember that USDA zone info for Zone 3a is just an average and our actual date of last frost will vary from year to year. Since half of the time in Zone 3a there is a last frost after May 15 be ready to cover your lisianthus in the event of a late frost.

USDA Zone Info for Zone 3a

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-40°F
Highest Expected Low-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in Zone 3a

You may be interested in our other planting guides for Zone 3a.