One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when to plant anchusa is to examine the USDA zone info for Chillicothe.

Planting Calendar for Anchusa

Frost tolerance for anchusa:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant anchusa much earlier in the year because they are very cold tolerant.

The earliest that you can plant anchusa in Chillicothe is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant anchusa and expect a good harvest is probably September. Any later than that and your anchusa may not have a chance to really do well. You can get started a little bit earlier by starting your anchusa indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Chillicothe. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Chillicothe may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Chillicothe you get surprised by a frost after April 15 so be sure to be ready to cover your anchusa in the event of a surprise late frost.

USDA Zone Info for Chillicothe

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Chillicothe

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