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

The USDA zone info for Garden Grove can be reffered to in order to figure out when it's a good idea to plant regal geranium.

Planting Calendar for Regal Geranium

Frost tolerance for regal geranium:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Regal Geranium are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can start planting them slightly earlier than more sensitive plants.

The earliest that you can plant regal geranium in Garden Grove 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 regal geranium and expect a good harvest is probably September. You probably don't want to wait any later than that or else your regal geranium may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your regal geranium indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Garden Grove. You should expect an average low temperature of 35°F in the coldest months of winter.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Garden Grove and it can change quite a bit from year to year. Half of the time in Garden Grove you get a frost after January 31 so make sure that you are ready to cover your regal geranium if you have a late frost.

USDA Zone Info for Garden Grove

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Garden Grove

You may be interested in your other planting guides for Garden Grove.