One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when it's the best time to plant scallions is to look at the USDA zone info for Presque Isle.

Planting Calendar for Scallions

Frost tolerance for scallions:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Scallions can survive in some cold which means that you can plant them just a tiny bit earlier in the year than more sensitive plants.

The earliest that you can plant scallions in Presque Isle 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 scallions and expect a good harvest is probably August. Any later than that and your scallions may not have a chance to grow to maturity. You can get started a little bit earlier by starting your scallions indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Presque Isle. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Presque Isle is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Presque Isle it frosts late in the year after May 15 so be sure to be ready to cover your scallions in the event of a late frost.

USDA Zone Info for Presque Isle

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Presque Isle

You may be interested in your other planting guides for Presque Isle.