One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant daylily in Irvine should be figured out by looking at the USDA zone info.

Planting Calendar for Daylily

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

Daylily are moderately cold tolerant which means that you can plant them earlier than other plants that might not handle the cold.

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

Last Frost Date

On average the last frost has passed is on January 31 in Irvine. It might get as low as 30°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Irvine is an average and the actual date of last frost changes from year to year. Half of the time in Irvine you get a frost after January 31 so make sure that you are prepared to protect your daylily in the event of a late frost.

USDA Zone Info for Irvine

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 Irvine

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