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.

A common way of figuring out when you can plant balloon flower is to check out the USDA zone info for Havre De Grace.

Planting Calendar for Balloon Flower

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

Since balloon flower are one of those plants that can tolerate a tiny bit of cold weather you can plant them slightly earlier in the year than other plants that might not handle the cold.

The earliest that you can plant balloon flower in Havre De Grace 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 balloon flower and expect a good harvest is probably August. Any later than that and your balloon flower may not have a chance to fully mature. Starting your balloon flower indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Havre De Grace. It might get as low as 0°F during the coldest months of winter.

Keep in mind that USDA zone info for Havre De Grace is an average and the actual date of last frost will vary from year to year. Since half of the time in Havre De Grace it frosts late in the year after April 15 be ready to protect your balloon flower in the event of one of those late frosts.

USDA Zone Info for Havre De Grace

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 Havre De Grace

You may be interested in your other planting guides for Havre De Grace.