One of the first steps you take when you are making a decision about 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.

The first opportunity to plant hibiscus in Mount Vernon should be determined by referring to the USDA zone info.

Planting Calendar for Hibiscus

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

Since hibiscus require warm weather you must wait until after the last frost before you can plant them.

The earliest that you can plant hibiscus in Mount Vernon 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. You probably don't want to wait any later than that or else your hibiscus may not have a chance to really do well. You can get started a little bit earlier by starting your hibiscus indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Mount Vernon. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for Mount Vernon is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Mount Vernon you get surprised by a frost after April 15 so be sure to be ready to protect your hibiscus in the event of one of those late frosts.

USDA Zone Info for Mount Vernon

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Mount Vernon

You may be interested in your other planting guides for Mount Vernon.