Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Berwick you can estimate when it's possible to plant balloon flower by looking at the USDA zone info.

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.

Balloon Flower tend to make it in a tiny bit of cold which tells us that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant balloon flower in Berwick 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. You probably don't want to wait any later than that or else your balloon flower may not have a chance to fully mature. You can get started a few weeks earlier by starting your balloon flower indoors.

Last Frost Date

The average date of last frost is April 15 in Berwick. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for Berwick may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Berwick there is a last frost after April 15 so make sure that you are ready to cover your balloon flower in the event of a surprise late frost.

USDA Zone Info for Berwick

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 Berwick

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