The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when it's possible to plant bells of ireland is to refer to the USDA zone info for Mount Vernon.

Planting Calendar for Bells of Ireland

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

Since bells of ireland do ok in moderate cold you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant bells of ireland in Mount Vernon 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 bells of ireland and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bells of ireland may not have a chance to really do well. You can get started a few weeks earlier by starting your bells of ireland indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Mount Vernon. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Mount Vernon is just an average the actual date of last frost will vary from year to year. Half of the time in Mount Vernon it frosts late in the year after April 15 so make sure that you are prepared to protect your bells of ireland if you have one of those late frosts.

USDA Zone Info for Mount Vernon

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Mount Vernon

You may be interested in your other planting guides for Mount Vernon.