One of the first steps you take when you are figuring out your gardening schedule is find your 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.

A way of getting a good idea when it's a good idea to plant oregano is to check out the USDA zone info for Indianapolis.

Planting Calendar for Oregano

Frost tolerance for oregano:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant oregano just a bit earlier in the year because they do well in moderate cold.

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

Last Frost Date

In Indianapolis the average date of last frost happens on April 15. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Indianapolis may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Indianapolis you get a frost after April 15 so always be ready to protect your oregano in the event of a late frost.

USDA Zone Info for Indianapolis

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 Indianapolis

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