One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Naperville you can determine when to plant shallots by reviewing the USDA zone info.

Planting Calendar for Shallots

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

Shallots do well in a tiny bit of cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant shallots in Naperville 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 shallots and expect a good harvest is probably August. If you wait any later than that and your shallots may not have a chance to grow to maturity. Starting your shallots indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Naperville. In the coldest months of winter you can expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Naperville is just an average and the actual date of last frost will vary from year to year. Since half of the time in Naperville it frosts late in the year after April 15 be ready to protect your shallots in the event of a late frost.

USDA Zone Info for Naperville

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 Naperville

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