One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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 the best time to plant calliopsis is to look at the USDA zone info for Delano.

Planting Calendar for Calliopsis

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

Calliopsis are not cold tolerant which means that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant calliopsis in Delano 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 calliopsis and expect a good harvest is probably September. If you wait any later than that and your calliopsis may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your calliopsis indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Delano. It might get as low as 25°F during the coldest months of winter.

Remember that USDA zone info for Delano is just an average and the actual date of last frost changes from year to year. Half of the time in Delano you get a frost after February 15 so make sure that you are prepared to cover your calliopsis in the event of a surprise late frost.

USDA Zone Info for Delano

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 Delano

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