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

The earliest that you can plant hemerocallis in Covina should be determined by looking at the USDA zone info.

Planting Calendar for Hemerocallis

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

Since hemerocallis do well in moderate cold you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant hemerocallis in Covina 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 hemerocallis and expect a good harvest is probably October. You probably don't want to wait any later than that or else your hemerocallis may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your hemerocallis indoors.

Last Frost Date

In Covina the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 30°F.

Keep in mind that USDA zone info for Covina is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Covina there is a last frost after January 31 so make sure that you are ready to protect your hemerocallis in the event of a late frost.

USDA Zone Info for Covina

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 Covina

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