When can I plant Streptocarpella in Zone 1a

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.

The first opportunity to plant streptocarpella in Zone 1a can be determined by using the USDA zone info.


Planting Calendar for Streptocarpella

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

You really shouldn't plant streptocarpella until after the last frost because they are not cold tolerant.

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

The earliest that you can plant streptocarpella in Zone 1a 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 streptocarpella and expect a good harvest is probably July. You probably don't want to wait any later than that or else your streptocarpella may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your streptocarpella indoors.

Last Frost Date

In Zone 1a the average date of last frost happens on June 15. In the coldest months of winter we should expect an average low temperature of -60°F.

Keep in mind that USDA zone info for Zone 1a is just an average and our actual date of last frost changes from year to year. Since half of the time in Zone 1a we get a frost after June 15 be ready to protect your streptocarpella in the event of one of those late frosts.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

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