The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when it's a good idea to plant scaevola is to refer to the USDA zone info for Fairfax.

Planting Calendar for Scaevola

Frost tolerance for scaevola:	Not tolerant of frost.
When to plant:	After the last frost.

It's a bad idea to plant scaevola until after the last frost because they require warm weather.

The earliest that you can plant scaevola in Fairfax is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant scaevola and expect a good harvest is probably August. You probably don't want to wait any later than that or else your scaevola may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your scaevola indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Fairfax. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Fairfax is just an average the actual date of last frost changes from year to year. Since half of the time in Fairfax you get surprised by a frost after April 15 be ready to protect your scaevola in the event of one of those late frosts.

USDA Zone Info for Fairfax

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Fairfax

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