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.

By looking at the USDA zone info for Placentia it's possible to figure out when you can plant romanesco.

Planting Calendar for Romanesco

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

Romanesco do well in mild cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant romanesco in Placentia 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 romanesco and expect a good harvest is probably October. Any later than that and your romanesco may not have a chance to grow to maturity. Starting your romanesco indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on January 31 in Placentia. It might get as low as 30°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Placentia is an average and the actual date of last frost is different every year. Half of the time in Placentia you get a frost after January 31 so make sure that you are ready to cover your romanesco in the event of a late frost.

USDA Zone Info for Placentia

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Placentia

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