One of the first steps you take when you are determining 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 can figure out when you can plant dahlia in Sayreville by referring to the USDA zone info.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After the last frost.

Since dahlia are not cold tolerant you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant dahlia in Sayreville 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. 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 few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Sayreville. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Sayreville may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Sayreville it frosts late in the year after April 15 so make sure that you are ready to cover your dahlia in the event of a surprise late frost.

USDA Zone Info for Sayreville

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 Sayreville

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