The USDA Zone info is a great tool for gardeners to help us estimate 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.

The best time to plant celeriac in Austin can be determined by using the USDA zone info.

Planting Calendar for Celeriac

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

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

The earliest that you can plant celeriac in Austin 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 celeriac and expect a good harvest is probably August. Any later than that and your celeriac may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your celeriac indoors.

Last Frost Date

In Austin the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Austin is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Austin you get surprised by a frost after May 15 be ready to cover your celeriac if you have a late frost.

USDA Zone Info for Austin

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Austin

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