Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant scaevola in Manassas should be estimated by referring to the USDA zone info.

Planting Calendar for Scaevola

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

Since scaevola are not cold tolerant it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant scaevola in Manassas 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. If you wait any later than that and your scaevola may not have a chance to really do well. You can get started a little bit earlier by starting your scaevola indoors.

Last Frost Date

On average the last frost is on April 15 in Manassas. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Manassas may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Manassas you get a frost after April 15 so make sure that you are ready to cover your scaevola if you have one of those late frosts.

USDA Zone Info for Manassas

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 Manassas

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