The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Placentia can be read to figure out when you can plant melampodium.

Planting Calendar for Melampodium

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

Melampodium are not cold tolerant which means that you need to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant melampodium in Placentia 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 melampodium and expect a good harvest is probably September. If you wait any later than that and your melampodium may not have a chance to fully mature. You can get started a little bit earlier by starting your melampodium indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Placentia. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Placentia may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Placentia last frost occurs after January 31 so always be ready to protect your melampodium if you have a surprise late frost.

USDA Zone Info for Placentia

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 Placentia

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