One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's possible to plant dahlia in Syracuse by referring to 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.

You can not plant dahlia until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant dahlia in Syracuse 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. You probably don't want to wait any later than that or else your dahlia may not have a chance to really do well. If you are starting your dahlia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Syracuse. In the coldest months of winter you can expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Syracuse is not always accurate and the actual date of last frost changes from year to year. Half of the time in Syracuse you get surprised by a frost after April 15 so make sure that you are ready to protect your dahlia if you have one of those late frosts.

USDA Zone Info for Syracuse

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Syracuse

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