The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Fountain you can determine when it's the best time to plant dahlia by reviewing the USDA zone info.

Planting Calendar for Dahlia

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

Since dahlia do not do well in cold weather you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant dahlia in Fountain 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 dahlia and expect a good harvest is probably August. Any later than that and your dahlia may not have a chance to fully mature. Starting your dahlia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Fountain. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Fountain is not always accurate the actual date of last frost changes from year to year. Half of the time in Fountain it frosts late in the year after April 15 so be sure to be ready to cover your dahlia if you have a surprise late frost.

USDA Zone Info for Fountain

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 Fountain

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