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 earliest that you can plant dipladenia in Norco should be figured out by referring to the USDA zone info.

Planting Calendar for Dipladenia

Frost tolerance for dipladenia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Dipladenia require warm weather which means that you really should wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant dipladenia in Norco is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant dipladenia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your dipladenia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your dipladenia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Norco. You can expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Norco is just an average and the actual date of last frost changes from year to year. Since half of the time in Norco last frost occurs after February 15 be ready to protect your dipladenia in the event of a late frost.

USDA Zone Info for Norco

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Norco

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