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

You should be able to estimate when you can plant dahlia by checking out the USDA zone info for Bergenfield.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant dahlia until after the last frost because they are not cold tolerant.

The earliest that you can plant dahlia in Bergenfield is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant dahlia and expect a good harvest is probably August. If you wait any later than that and your dahlia may not have a chance to really do well. If you are starting your dahlia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Bergenfield. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Bergenfield is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Bergenfield it frosts late in the year after April 15 so just be sure to be ready to protect your dahlia if you have one of those late frosts.

USDA Zone Info for Bergenfield

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 Bergenfield

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