When can I plant Salpiglossis in Zone 2b

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

In Zone 2b you can determine when to plant salpiglossis by reviewing the USDA zone info.


Planting Calendar for Salpiglossis

Frost tolerance for salpiglossis: Not tolerant of frost.
When you should plant them: After the last frost has passed.

Salpiglossis require warm weather which means that you need to wait until it warms up after all chance of frost has passed before you can plant them.

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

The earliest that you can plant salpiglossis in Zone 2b 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 salpiglossis and expect a good harvest is probably August. If you wait any later than that and your salpiglossis may not have a chance to grow to maturity. Starting your salpiglossis indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Zone 2b the average date of last frost happens on May 15. In the coldest months of winter we can expect an average low temperature of -45°F.

Keep in mind that USDA zone info for Zone 2b is an average and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 2b we get a frost after May 15 be ready to cover your salpiglossis if we have a late frost.

USDA Zone Info for Zone 2b

Here is the info for USDA Zone 2b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)August 15
Lowest Expected Low-45°F
Highest Expected Low-40°F

This means that on a really cold year, the coldest it will get is -45°F. On most years you should be prepared to experience lows near -40°F.

Plants to Grow in Zone 2b

You may be interested in our other planting guides for Zone 2b.