When to Plant Dahlias in Atlantic Highlands, NJ

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

By referring to the USDA zone info for Atlantic Highlands it's a good idea to figure out when to plant dahlias.


Planting Calendar for Dahlias

Frost tolerance for dahlias: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

It's a bad idea to plant dahlias until after the last frost because they require warm weather.

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

The earliest that you can plant dahlias in Atlantic Highlands 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 dahlias and expect a good harvest is probably August. If you wait any later than that and your dahlias may not have a chance to fully mature. Starting your dahlias indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Atlantic Highlands. You can expect an average low temperature of 5°F in the coldest months of winter.

Keep in mind that USDA zone info for Atlantic Highlands is not always accurate and the actual date of last frost changes from year to year. Half of the time in Atlantic Highlands you get surprised by a frost after April 15 so make sure that you are ready to cover your dahlias in the event of a surprise late frost.

USDA Zone Info for Atlantic Highlands

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 Low5°F
Highest Expected Low10°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 Atlantic Highlands

You may be interested in your other planting guides for Atlantic Highlands.