When can I plant Hosta in Zone 10b

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

The USDA zone info for Zone 10b can be used to determine when to plant hosta.


Planting Calendar for Hosta

Frost tolerance for hosta: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

Since hosta are moderately cold tolerant you can plant them a little earlier in the year than other frost tender plants.

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

The earliest that you can plant hosta in Zone 10b is January. However, you really should wait until February if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is January 31 in Zone 10b. We should expect an average low temperature of 35°F in the coldest months of winter.

Keep in mind that USDA zone info for Zone 10b is not always accurate and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 10b we get a frost after January 31 be ready to cover your hosta in the event of a late frost.

USDA Zone Info for Zone 10b

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)January 31
Average Date of First Frost (fall)December 15
Lowest Expected Low35°F
Highest Expected Low40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Zone 10b

You may be interested in our other planting guides for Zone 10b.