When to Plant Romanesco in Zone 6a

One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

The USDA zone info for Zone 6a can be used to figure out when it's the best time to plant romanesco.


Planting Calendar for Romanesco

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

Since romanesco are moderately cold tolerant you can plant them a little earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant romanesco
Possibly ok, but a risky time to plant romanesco
Probably not a good time to plant romanesco

The earliest that you can plant romanesco in Zone 6a 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. If you wait any later than that and your romanesco may not have a chance to fully mature. You can get started a few weeks earlier by starting your romanesco indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Zone 6a. In the coldest months of winter you should expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Zone 6a is an average and the actual date of last frost will vary from year to year. Half of the time in Zone 6a you get a frost after April 15 so always be ready to protect your romanesco if you have a surprise late frost.

USDA Zone Info for Zone 6a

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Zone 6a

You may be interested in your other planting guides for Zone 6a.