One of the best tools that you have as gardeners to help us figure out 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.

The earliest that you can plant lupine in Manteca can be figured out by reviewing 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.

You can plant lupine a little bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant lupine in Manteca 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 few weeks earlier by starting your lupine indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Manteca. In the coldest months of winter you should expect an average low temperature of 25°F.

Always keep in mind that USDA zone info for Manteca is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Manteca you get surprised by a frost after February 15 so make sure that you are prepared to cover your lupine in the event of a surprise late frost.

USDA Zone Info for Manteca

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Manteca

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