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.

The USDA zone info for Waterloo should be reffered to in order to estimate when it's a good idea to plant anise.

Planting Calendar for Anise

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

You can plant anise just a tiny bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant anise in Waterloo 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 anise and expect a good harvest is probably August. You probably don't want to wait any later than that or else your anise may not have a chance to really do well. You can get started a few weeks earlier by starting your anise indoors.

Last Frost Date

The average date of last frost is April 15 in Waterloo. You can expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Waterloo is just an average and the actual date of last frost will vary from year to year. Since half of the time in Waterloo it frosts late in the year after April 15 be ready to protect your anise in the event of one of those late frosts.

USDA Zone Info for Waterloo

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 Waterloo

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