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.

One way of determining when it's a good idea to plant romanesco is to look at the USDA zone info for Mendham.

Planting Calendar for Romanesco

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

You can plant romanesco just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant romanesco in Mendham 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. You probably don't want to wait any later than that or else your romanesco may not have a chance to really do well. You can get started a little bit earlier by starting your romanesco indoors.

Last Frost Date

The average date of last frost is April 15 in Mendham. In the coldest months of winter you can expect an average low temperature of -5°F.

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

USDA Zone Info for Mendham

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Mendham

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