The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

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

Planting Calendar for Oenothera

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

Oenothera tend to make it in a little bit of cold which means that you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant oenothera in Azusa 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 oenothera and expect a good harvest is probably October. If you wait any later than that and your oenothera may not have a chance to grow to maturity. You can get started a little bit earlier by starting your oenothera indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Azusa. It might get as low as 30°F during the coldest months of winter.

It's important to remember that USDA zone info for Azusa is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Azusa you get a frost after January 31 be ready to cover your oenothera in the event of a late frost.

USDA Zone Info for Azusa

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Azusa

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