Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Star you will be able to determine when you can 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 do ok in a little bit of cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant oenothera in Star 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. If you wait any later than that and 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 is on April 15 in Star. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Star is an average the actual date of last frost is different every year. Half of the time in Star you get a frost after April 15 so make sure that you are ready to cover your oenothera in the event of one of those late frosts.

USDA Zone Info for Star

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Star

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