Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can estimate when it's a good idea to plant lupine in Barstow by referring to the USDA zone info.

Planting Calendar for Lupine

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

Lupine are moderately cold tolerant which tells us that you can start planting them earlier than other frost tender plants.

The earliest that you can plant lupine in Barstow is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant lupine and expect a good harvest is probably October. Any later than that and your lupine may not have a chance to really do well. You can get started a couple of weeks earlier by starting your lupine indoors.

Last Frost Date

In Barstow the average date of last frost happens on February 15. It might get as low as 20°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Barstow is just an average and the actual date of last frost changes from year to year. Since half of the time in Barstow it frosts late in the year after February 15 be ready to protect your lupine in the event of one of those late frosts.

USDA Zone Info for Barstow

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 Barstow

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