One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

One way of determining when it's the best time to plant lithospermum is to look at the USDA zone info for North Bend.

Planting Calendar for Lithospermum

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

Since lithospermum are not cold tolerant it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant lithospermum in North Bend 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 lithospermum and expect a good harvest is probably September. If you wait 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

The average date of last frost is February 15 in North Bend. In the coldest months of winter you should expect an average low temperature of 20°F.

Since the USDA zone info for North Bend is not always accurate the actual date of last frost changes from year to year. Half of the time in North Bend it frosts late in the year after February 15 so just be sure to be ready to protect your lithospermum if you have a late frost.

USDA Zone Info for North Bend

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

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

Plants to Grow in North Bend

You may be interested in your other planting guides for North Bend.