When can I plant Calibrachoa in Zone 8b

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

A common way of determining when you can plant calibrachoa is to use the USDA zone info for Zone 8b.


Planting Calendar for Calibrachoa

Frost tolerance for calibrachoa: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

You can plant calibrachoa just a tiny bit earlier in the year because they do ok in moderate cold.

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

The earliest that you can plant calibrachoa in Zone 8b is March. However, you really should wait until April if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is March 15 in Zone 8b. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Zone 8b is just an average our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 8b it frosts late in the year after March 15 so just be sure to be ready to cover your calibrachoa if we have a surprise late frost.

USDA Zone Info for Zone 8b

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low15°F
Highest Expected Low20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Zone 8b

You may be interested in our other planting guides for Zone 8b.