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 Monongahela you can determine when it's possible to plant achimenes by referring to the USDA zone info.

Planting Calendar for Achimenes

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

You should not plant achimenes until after the last frost because they are not cold tolerant.

The earliest that you can plant achimenes in Monongahela 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 achimenes and expect a good harvest is probably August. Any later than that and your achimenes may not have a chance to really do well. Starting your achimenes indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Monongahela. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Monongahela 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 Monongahela it frosts late in the year after April 15 be ready to cover your achimenes in the event of a late frost.

USDA Zone Info for Monongahela

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 Monongahela

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