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

In Leominster you can figure out when it's the best time to plant bells of ireland by looking at the USDA zone info.

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.

Bells of Ireland are barely cold tolerant which means that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant bells of ireland in Leominster 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. Any later than that and your bells of ireland may not have a chance to fully mature. If you are starting your bells of ireland indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Leominster may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Leominster it frosts late in the year after April 15 be ready to cover your bells of ireland if you have one of those late frosts.

USDA Zone Info for Leominster

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 Leominster

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