One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Marathon you can figure out when it's the best time to plant calliopsis by referring to the USDA zone info.

Planting Calendar for Calliopsis

Frost tolerance for calliopsis:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since calliopsis are not cold tolerant you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant calliopsis in Marathon is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant calliopsis and expect a good harvest is probably November. If you wait any later than that and your calliopsis may not have a chance to grow to maturity. You can get started a little bit earlier by starting your calliopsis indoors.

Last Frost Date

In Marathon it never frosts. You can expect an average low temperature of 45°F in the coldest months of winter.

It's important to remember that USDA zone info for Marathon is not always accurate and the actual date of last frost can change quite a bit from year to year. Since it never frosts in Marathon you do not have to be ready to protect your calliopsis in the event of a late frost.

USDA Zone Info for Marathon

Here is the info for USDA Zone 11b.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	45°F
Highest Expected Low	50°F

This means that on a really cold year, the coldest it will get is 45°F. On most years you should be prepared to experience lows near 50°F.

Plants to Grow in Marathon

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