One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. 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 estimate when it's a good idea to plant lithospermum by looking at the USDA zone info for Santaquin.

Planting Calendar for Lithospermum

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

Lithospermum do not do well in cold weather which tells us that it is necessary to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant lithospermum in Santaquin 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 really do well. You can get started a little bit earlier by starting your lithospermum indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Santaquin. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Santaquin may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Santaquin last frost occurs after April 15 so just be sure to be ready to cover your lithospermum in the event of a surprise late frost.

USDA Zone Info for Santaquin

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 Santaquin

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