One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to figure out when it's the best time to plant radishes by referring to the USDA zone info for Passaic.

Planting Calendar for Radishes

Frost tolerance for radishes:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Radishes do ok in cold weather which means that you can plant them a lot earlier in the year than other frost tender plants.

The earliest that you can plant radishes in Passaic 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 radishes and expect a good harvest is probably September. Any later than that and your radishes may not have a chance to really do well. Starting your radishes indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Passaic. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Passaic is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Passaic it frosts late in the year after April 15 be ready to protect your radishes in the event of one of those late frosts.

USDA Zone Info for Passaic

Here is the info for USDA Zone 7a.

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

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Passaic

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