The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for San Luis Obispo should be read to determine when you can plant eggplants.

Planting Calendar for Eggplants

Frost tolerance for eggplants:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant eggplants until after the last frost has passed because they require warm weather.

The earliest that you can plant eggplants in San Luis Obispo 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 eggplants and expect a good harvest is probably September. Any later than that and your eggplants may not have a chance to fully mature. If you are starting your eggplants indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in San Luis Obispo. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that USDA zone info for San Luis Obispo is not always accurate and the actual date of last frost is different every year. Half of the time in San Luis Obispo you get a frost after February 15 so make sure that you are prepared to protect your eggplants if you have one of those late frosts.

USDA Zone Info for San Luis Obispo

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 San Luis Obispo

You may be interested in your other planting guides for San Luis Obispo.