One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Sulphur you should be able to figure out when it's possible to plant rhubarb.

Planting Calendar for Rhubarb

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

Rhubarb do well in moderate cold which means that you can plant them earlier than other frost tender plants.

The earliest that you can plant rhubarb in Sulphur is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant rhubarb and expect a good harvest is probably October. Any later than that and your rhubarb may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your rhubarb indoors.

Last Frost Date

On average the last frost is on February 15 in Sulphur. It might get as low as 20°F during the coldest months of winter.

Remember that USDA zone info for Sulphur is an average and the actual date of last frost changes from year to year. Half of the time in Sulphur there is a last frost after February 15 so be sure to be ready to protect your rhubarb in the event of a late frost.

USDA Zone Info for Sulphur

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

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

Plants to Grow in Sulphur

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