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.

In Gaithersburg you can determine when you can plant hibiscus by referring to the USDA zone info.

Planting Calendar for Hibiscus

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

Hibiscus require warm weather which tells us that it is necessary to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant hibiscus in Gaithersburg 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 hibiscus and expect a good harvest is probably August. Any later than that and your hibiscus may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your hibiscus indoors.

Last Frost Date

The average date of last frost is April 15 in Gaithersburg. It might get as low as 0°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Gaithersburg is not always accurate and the actual date of last frost changes from year to year. Half of the time in Gaithersburg it frosts late in the year after April 15 so make sure that you are ready to protect your hibiscus if you have a surprise late frost.

USDA Zone Info for Gaithersburg

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 Gaithersburg

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