Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Mckeesport can be reffered to in order to figure out when to plant dahlia.

Planting Calendar for Dahlia

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

Since dahlia are not cold tolerant it is important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant dahlia in Mckeesport 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 really do well. Starting your dahlia indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Mckeesport is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Mckeesport last frost occurs after April 15 so always be ready to cover your dahlia if you have a surprise late frost.

USDA Zone Info for Mckeesport

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 Mckeesport

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