One of the first steps you take when you are estimating 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.

In Sulphur you can figure out when it's possible to plant lupine by reviewing the USDA zone info.

Planting Calendar for Lupine

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

Lupine tend to make it in mild cold which tells us that you can plant them a little earlier in the year than other plants that might not handle the cold.

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

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Sulphur. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Sulphur 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 Sulphur you get surprised by a frost after February 15 be ready to protect your lupine 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.