One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of determining when it's a good idea to plant catharanthus is to use the USDA zone info for Huntington Beach.

Planting Calendar for Catharanthus

Frost tolerance for catharanthus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since catharanthus require warm weather it is important to wait until after the last frost when the weather gets warmer before you can plant them.

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

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Huntington Beach. It might get as low as 35°F during the coldest months of winter.

It's important to remember that USDA zone info for Huntington Beach is just an average and the actual date of last frost is different every year. Half of the time in Huntington Beach it frosts late in the year after January 31 so make sure that you are prepared to protect your catharanthus in the event of a surprise late frost.

USDA Zone Info for Huntington Beach

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 Huntington Beach

You may be interested in your other planting guides for Huntington Beach.