One of the first steps you take when you are figuring out 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.

The best time to plant regal geranium in Princeton can be figured out by using the USDA zone info.

Planting Calendar for Regal Geranium

Frost tolerance for regal geranium:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Regal Geranium are barely cold tolerant which means that you can start planting them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant regal geranium in Princeton is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant regal geranium and expect a good harvest is probably August. If you wait any later than that and your regal geranium may not have a chance to really do well. You can get started a couple of weeks earlier by starting your regal geranium indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Princeton. In the coldest months of winter you can expect an average low temperature of 10°F.

Keep in mind that USDA zone info for Princeton is an average and the actual date of last frost will vary from year to year. Since half of the time in Princeton there is a last frost after March 15 be ready to protect your regal geranium in the event of a surprise late frost.

USDA Zone Info for Princeton

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Princeton

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