The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when it's the best time to plant dill by reviewing the USDA zone info for Columbus.

Planting Calendar for Dill

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

Dill are barely cold tolerant which means that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant dill in Columbus 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 dill and expect a good harvest is probably August. Any later than that and your dill may not have a chance to fully mature. If you are starting your dill indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Columbus the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Columbus is not always accurate and the actual date of last frost changes from year to year. Half of the time in Columbus it frosts late in the year after April 15 so make sure that you are ready to cover your dill if you have a surprise late frost.

USDA Zone Info for Columbus

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 Columbus

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