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.

A common way of figuring out when it's the best time to plant cilantro is to check out the USDA zone info for Thomson.

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.

You can plant cilantro slightly earlier in the year because they are barely cold tolerant.

The earliest that you can plant cilantro in Thomson 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. If you wait 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 couple of weeks earlier.

Last Frost Date

In Thomson the average date of last frost happens on March 15. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Thomson is just an average the actual date of last frost is different every year. Half of the time in Thomson you get surprised by a frost after March 15 so be sure to be ready to cover your cilantro if you have a late frost.

USDA Zone Info for Thomson

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Thomson

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