One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of determining when you can plant angel's trumpets is to refer to the USDA zone info for Boonville.

Planting Calendar for Angel's Trumpets

Frost tolerance for angel's trumpets:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant angel's trumpets a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant angel's trumpets in Boonville 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 angel's trumpets and expect a good harvest is probably August. You probably don't want to wait any later than that or else your angel's trumpets may not have a chance to fully mature. You can get started a little bit earlier by starting your angel's trumpets indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Boonville. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Boonville may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Boonville last frost occurs after April 15 so make sure that you are prepared to cover your angel's trumpets in the event of one of those late frosts.

USDA Zone Info for Boonville

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 Boonville

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