The USDA Zone info is a great tool for gardeners to help us determine 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.

You should be able to determine when it's a good idea to plant lithospermum by referring to the USDA zone info for Springville.

Planting Calendar for Lithospermum

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

It's a bad idea to plant lithospermum until after the last frost because they are not cold tolerant.

The earliest that you can plant lithospermum in Springville 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. Any later than that and your lithospermum may not have a chance to fully mature. If you are starting your lithospermum indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Springville. In the coldest months of winter you can expect an average low temperature of -5°F.

Keep in mind that USDA zone info for Springville is just an average and the actual date of last frost will vary from year to year. Since half of the time in Springville you get a frost after April 15 be ready to protect your lithospermum if you have one of those late frosts.

USDA Zone Info for Springville

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 Springville

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