One of the first steps you take when you are figuring out 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.

A way of figuring out when it's the best time to plant violas is to refer to the USDA zone info for Hawthorne.

Planting Calendar for Violas

Frost tolerance for violas:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Violas are very cold tolerant which tells us that you can plant them a quite a bit earlier than other frost tender plants.

The earliest that you can plant violas in Hawthorne 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 violas and expect a good harvest is probably October. If you wait any later than that and your violas may not have a chance to fully mature. Starting your violas indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Hawthorne the average date of last frost happens on January 31. It might get as low as 35°F during the coldest months of winter.

Remember that USDA zone info for Hawthorne is just an average and the actual date of last frost is different every year. Half of the time in Hawthorne it frosts late in the year after January 31 so be sure to be ready to cover your violas in the event of one of those late frosts.

USDA Zone Info for Hawthorne

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 Low	35°F
Highest Expected Low	40°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 Hawthorne

You may be interested in your other planting guides for Hawthorne.