One of the first steps you take when you are making a decision about 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 making a decision about when it's a good idea to plant shallots is to look at the USDA zone info for Harrisburg.

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.

You can plant shallots slightly earlier in the year because they are barely cold tolerant.

The earliest that you can plant shallots in Harrisburg 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 fully mature. You can get started a couple of weeks earlier by starting your shallots indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Harrisburg. It might get as low as 5°F during the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Harrisburg and it can change quite a bit from year to year. Half of the time in Harrisburg last frost occurs after April 15 so be sure to be ready to protect your shallots in the event of one of those late frosts.

USDA Zone Info for Harrisburg

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Harrisburg

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