Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to estimate when it's a good idea to plant anchusa by checking out the USDA zone info for Omaha.

Planting Calendar for Anchusa

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

Anchusa do well in cold weather which tells us that you can plant them quite a bit earlier in the year than other frost tender plants.

The earliest that you can plant anchusa in Omaha 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 fully mature. Starting your anchusa indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Omaha may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Omaha last frost occurs after April 15 be ready to protect your anchusa in the event of a late frost.

USDA Zone Info for Omaha

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 Omaha

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