When can I plant Lemon balm in Zone 9b

Before planting it is a good idea to find our USDA Zone info to figure out 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.

By using the USDA zone info for Zone 9b you should be able to determine when you can plant lemon balm.


Planting Calendar for Lemon balm

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

You can plant lemon balm a bit earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

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

The earliest that you can plant lemon balm in Zone 9b is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant lemon balm and expect a good harvest is probably September. If you wait any later than that and your lemon balm may not have a chance to fully mature. You can get started a few weeks earlier by starting your lemon balm indoors.

Last Frost Date

The average date of last frost is February 15 in Zone 9b. In the coldest months of winter we should expect an average low temperature of 25°F.

It's important to remember that our actual date of last frost is just an average because it is based on the USDA zone info for Zone 9b and it will vary from year to year. Since half of the time in Zone 9b we get surprised by a frost after February 15 be ready to protect your lemon balm if we have a surprise late frost.

USDA Zone Info for Zone 9b

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)February 15
Average Date of First Frost (fall)December 15
Lowest Expected Low25°F
Highest Expected Low30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Zone 9b

You may be interested in our other planting guides for Zone 9b.