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 USDA zone info for Seguin can be read to figure out when it's the best time to plant oenothera.

Planting Calendar for Oenothera

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

Oenothera are moderately cold tolerant which means that you can start planting them earlier than plants that are more sensitive to the cold.

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

The last month that you can plant oenothera and expect a good harvest is probably September. You probably don't want to wait any later than that or else your oenothera may not have a chance to fully mature. You can get started a few weeks earlier by starting your oenothera indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Seguin. You should expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Seguin is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Seguin you get surprised by a frost after March 15 so be sure to be ready to protect your oenothera if you have one of those late frosts.

USDA Zone Info for Seguin

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Seguin

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