When to Plant Cilantro in Coralville, IA

One of the first steps you take when you are getting a good idea 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.

By looking at the USDA zone info for Coralville it's a good idea to determine when it's possible to plant cilantro.

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Planting Calendar for Cilantro

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

Cilantro can survive in a tiny bit of cold which tells us that you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant cilantro
Possibly ok, but a risky time to plant cilantro
Probably not a good time to plant cilantro

The earliest that you can plant cilantro in Coralville 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 cilantro and expect a good harvest is probably August. Any later than that and your cilantro may not have a chance to grow to maturity. Starting your cilantro indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Coralville. In the coldest months of winter you can expect an average low temperature of -15°F.

Remember that USDA zone info for Coralville is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Coralville it frosts late in the year after April 15 be ready to protect your cilantro in the event of one of those late frosts.

USDA Zone Info for Coralville

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 Coralville

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