One of the first steps you take when you are estimating your gardening schedule is find your 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.

In Marion you can figure out when it's possible to plant romanesco by reviewing the USDA zone info.

Planting Calendar for Romanesco

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

Romanesco are moderately cold tolerant which means that you can get them planted earlier than plants that are more sensitive to the cold.

The earliest that you can plant romanesco in Marion is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant romanesco and expect a good harvest is probably September. Any later than that and your romanesco may not have a chance to really do well. You can get started a couple of weeks earlier by starting your romanesco indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Marion. It might get as low as 5°F during the coldest months of winter.

Keep in mind that USDA zone info for Marion is an average and the actual date of last frost will vary from year to year. Half of the time in Marion it frosts late in the year after April 15 so always be ready to cover your romanesco in the event of a surprise late frost.

USDA Zone Info for Marion

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Marion

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