One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

The earliest that you can plant chinese celery in Olathe should be determined by checking out the USDA zone info.

Planting Calendar for Chinese celery

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

Since chinese celery do ok in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant chinese celery in Olathe 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 chinese celery and expect a good harvest is probably August. Any later than that and your chinese celery may not have a chance to fully mature. You can get started a little bit earlier by starting your chinese celery indoors.

Last Frost Date

The average date of last frost is April 15 in Olathe. You can expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Olathe may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Olathe you get surprised by a frost after April 15 be ready to protect your chinese celery if you have one of those late frosts.

USDA Zone Info for Olathe

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 Olathe

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