One of the first steps you take when you are estimating 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.

In Pawtucket you can estimate when it's possible to plant lithospermum by referring to the USDA zone info.

Planting Calendar for Lithospermum

Frost tolerance for lithospermum:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Lithospermum are not cold tolerant which means that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant lithospermum in Pawtucket is April. However, you really should wait until May if you don't want to take any chances.

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

Last Frost Date

On average the last frost is on April 15 in Pawtucket. It might get as low as -5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Pawtucket may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Pawtucket you get surprised by a frost after April 15 so make sure that you are ready to protect your lithospermum if you have a late frost.

USDA Zone Info for Pawtucket

Here is the info for USDA Zone 6b.

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

Plants to Grow in Pawtucket

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