The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Mammoth Lakes you can determine when to plant hardy hibiscus by checking out the USDA zone info.

Planting Calendar for Hardy Hibiscus

Frost tolerance for hardy hibiscus:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant hardy hibiscus earlier in the year because they are very cold tolerant.

The earliest that you can plant hardy hibiscus in Mammoth Lakes is February. However, you really should wait until March if you don't want to take any chances.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Mammoth Lakes. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Mammoth Lakes may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Mammoth Lakes it frosts late in the year after April 15 be ready to cover your hardy hibiscus in the event of a late frost.

USDA Zone Info for Mammoth Lakes

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Mammoth Lakes

You may be interested in your other planting guides for Mammoth Lakes.