The USDA Zone info is a great tool for gardeners to help us figure out 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.

A way of making a decision about when it's possible to plant scallions is to check out the USDA zone info for Manteno.

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 do ok in mild cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant scallions in Manteno 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. Any later than that and your scallions may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your scallions indoors.

Last Frost Date

The average date of last frost is April 15 in Manteno. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Manteno may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Manteno it frosts late in the year after April 15 be ready to protect your scallions in the event of one of those late frosts.

USDA Zone Info for Manteno

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 Manteno

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