Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Manchester you can estimate when it's possible to plant scallions by reviewing the USDA zone info.

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.

Since scallions are barely cold tolerant you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant scallions in Manchester is March. However, you really should wait until April 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. If you wait any later than that and your scallions may not have a chance to really do well. You can get started a couple of weeks earlier by starting your scallions indoors.

Last Frost Date

On average the last frost is on April 15 in Manchester. You can expect an average low temperature of -20°F in the coldest months of winter.

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

USDA Zone Info for Manchester

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Manchester

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