The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Alliance you can estimate when it's possible to plant angel's trumpets by referring to the USDA zone info.

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 Alliance 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. Any later than that and your angel's trumpets may not have a chance to really do well. 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 Alliance. In the coldest months of winter you should expect an average low temperature of -20°F.

It's important to remember that USDA zone info for Alliance may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Alliance last frost occurs after April 15 so always be ready to protect your angel's trumpets if you have one of those late frosts.

USDA Zone Info for Alliance

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Alliance

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