When can I plant Streptocarpella in Zone 1b

One of the first steps we take when we are determining our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A way of figuring out when to plant streptocarpella is to check out the USDA zone info for Zone 1b.


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.

Since streptocarpella are not cold tolerant you must wait until after all chance of frost has passed before you can plant them.

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 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 streptocarpella and expect a good harvest is probably July. If you wait any later than that and your streptocarpella may not have a chance to fully mature. Starting your streptocarpella indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on June 15 in Zone 1b. We can expect an average low temperature of -55°F in the coldest months of winter.

It's important to remember that USDA zone info for Zone 1b is an average and our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 1b it frosts late in the year after June 15 so just be sure to be ready to protect your streptocarpella 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.