The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant balloon flower in Warrenton should be determined by reviewing 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 mild cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant balloon flower in Warrenton 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 grow to maturity. Starting your balloon flower indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Warrenton the average date of last frost happens on April 15. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Warrenton is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Warrenton it frosts late in the year after April 15 so make sure that you are ready to protect your balloon flower in the event of one of those late frosts.

USDA Zone Info for Warrenton

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Warrenton

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