Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Garden Grove you can estimate when to plant impatiens by looking at the USDA zone info.

Planting Calendar for Impatiens

Frost tolerance for impatiens:	Not tolerant of frost.
When to plant:	After the last frost.

It's not a good idea to plant impatiens until after the last frost because they are not cold tolerant.

The earliest that you can plant impatiens 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 impatiens and expect a good harvest is probably September. You probably don't want to wait any later than that or else your impatiens may not have a chance to grow to maturity. If you are starting your impatiens indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Garden Grove the average date of last frost happens on January 31. It might get as low as 35°F during the coldest months of winter.

Since the USDA zone info for Garden Grove is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Garden Grove there is a last frost after January 31 be ready to protect your impatiens in the event of one of those late frosts.

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.