One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant lupine in Coronado should be estimated 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.

Lupine are one of those plants that can tolerate a little bit of cold weather which means that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant lupine in Coronado 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 grow to maturity. You can get started a little bit earlier by starting your lupine indoors.

Last Frost Date

The average date of last frost is January 31 in Coronado. It might get as low as 35°F during the coldest months of winter.

Since the USDA zone info for Coronado may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Coronado you get surprised by a frost after January 31 so make sure that you are prepared to protect your lupine in the event of a surprise late frost.

USDA Zone Info for Coronado

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Coronado

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