Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. 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 Hightstown can be read to figure out when you can plant rudbeckia.

Planting Calendar for Rudbeckia

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

Since rudbeckia are moderately cold tolerant you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant rudbeckia in Hightstown 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 rudbeckia and expect a good harvest is probably September. Any later than that and your rudbeckia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your rudbeckia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Hightstown. In the coldest months of winter you should expect an average low temperature of -5°F.

Remember that USDA zone info for Hightstown is an average and the actual date of last frost will vary from year to year. Since half of the time in Hightstown you get a frost after April 15 be ready to protect your rudbeckia if you have one of those late frosts.

USDA Zone Info for Hightstown

Here is the info for USDA Zone 6b.

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

Plants to Grow in Hightstown

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