The USDA Zone info is a great tool for gardeners to help us determine 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.

By looking at the USDA zone info for Manassas it's possible to estimate when you can plant tagetes.

Planting Calendar for Tagetes

Frost tolerance for tagetes:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since tagetes require warm weather you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant tagetes 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 tagetes and expect a good harvest is probably August. If you wait any later than that and your tagetes may not have a chance to really do well. You can get started a couple of weeks earlier by starting your tagetes indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Manassas. You should expect an average low temperature of 0°F in the coldest months of winter.

It's important to remember that USDA zone info for Manassas may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Manassas you get surprised by a frost after April 15 be ready to protect your tagetes 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.