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.

By checking out the USDA zone info for Lowell you will be able to figure out when you can plant digitalis.

Planting Calendar for Digitalis

Frost tolerance for digitalis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Digitalis do well in moderate cold which means that you can get them planted earlier than other plants that might not handle the cold.

The earliest that you can plant digitalis in Lowell is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant digitalis and expect a good harvest is probably September. You probably don't want to wait any later than that or else your digitalis may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your digitalis indoors.

Last Frost Date

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

Since the USDA zone info for Lowell may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Lowell you get a frost after April 15 so just be sure to be ready to protect your digitalis if you have a surprise late frost.

USDA Zone Info for Lowell

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 Lowell

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