When can I plant Achimenes in Zone 1b

The USDA Zone info is a great tool for gardeners to help us figure out our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

You can figure out when it's possible to plant achimenes in Zone 1b by looking at the USDA zone info.


Planting Calendar for Achimenes

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

Since achimenes are not cold tolerant you must wait until after the last frost has passed before you can plant them.

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

The earliest that you can plant achimenes in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant achimenes and expect a good harvest is probably July. If you wait any later than that and your achimenes may not have a chance to fully mature. You can get started a little bit earlier by starting your achimenes indoors.

Last Frost Date

In Zone 1b the average date of last frost happens on June 15. In the coldest months of winter we can expect an average low temperature of -55°F.

It's important to remember that our actual date of last frost is an average because it is based on the USDA zone info for Zone 1b and it is different every year. Half of the time in Zone 1b we get surprised by a frost after June 15 so just be sure to be ready to cover your achimenes in the event of a late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.