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.

By checking out the USDA zone info for Litchfield you will be able to figure out when it's possible to plant lupine.

Planting Calendar for Lupine

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

Since lupine do well in moderate cold you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant lupine in Litchfield 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 lupine and expect a good harvest is probably August. If you wait any later than that and your lupine may not have a chance to really do well. You can get started a little bit earlier by starting your lupine indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Litchfield. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Litchfield is an average the actual date of last frost changes from year to year. Half of the time in Litchfield there is a last frost after May 15 so be sure to be ready to protect your lupine in the event of one of those late frosts.

USDA Zone Info for Litchfield

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Litchfield

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