One of the best tools that you have as gardeners to help us figure out 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.

The first chance to plant achimenes in Marathon should be estimated by looking at the USDA zone info.

Planting Calendar for Achimenes

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

You should not plant achimenes until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant achimenes 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 achimenes and expect a good harvest is probably November. If you wait any later than that and your achimenes may not have a chance to fully mature. Starting your achimenes indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

It's important to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Marathon and it can change quite a bit from year to year. Since it never frosts in Marathon you do not have to be ready to cover your achimenes in the event of one of those late frosts.

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.