When to Plant Verbena in Union City, CA

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

The USDA zone info for Union City should be read to figure out when it's the best time to plant verbena.


Planting Calendar for Verbena

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

Since verbena are one of those plants that can tolerate a tiny bit of cold weather you can plant them slightly earlier in the year than more sensitive plants.

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

The earliest that you can plant verbena in Union City 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 verbena and expect a good harvest is probably September. You probably don't want to wait any later than that or else your verbena may not have a chance to fully mature. You can get started a few weeks earlier by starting your verbena indoors.

Last Frost Date

In Union City the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Union City and it can change quite a bit from year to year. Since half of the time in Union City you get surprised by a frost after January 31 be ready to cover your verbena if you have one of those late frosts.

USDA Zone Info for Union City

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)January 31
Average Date of First Frost (fall)December 15
Lowest Expected Low30°F
Highest Expected Low35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Union City

You may be interested in your other planting guides for Union City.