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

In Corona you can estimate when it's a good idea to plant parsnip by looking at the USDA zone info.

Planting Calendar for Parsnip

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

Since parsnip are moderately cold tolerant you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant parsnip in Corona 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 parsnip and expect a good harvest is probably October. You probably don't want to wait any later than that or else your parsnip may not have a chance to fully mature. Starting your parsnip indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Corona is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Corona you get surprised by a frost after February 15 be ready to cover your parsnip if you have a late frost.

USDA Zone Info for Corona

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 Corona

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