One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when to plant calibrachoa is to look at the USDA zone info for Palmdale.

Planting Calendar for Calibrachoa

Frost tolerance for calibrachoa:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since calibrachoa do ok in moderate cold you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant calibrachoa in Palmdale 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 calibrachoa and expect a good harvest is probably August. You probably don't want to wait any later than that or else your calibrachoa may not have a chance to grow to maturity. Starting your calibrachoa indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Palmdale the average date of last frost happens on March 15. In the coldest months of winter you can expect an average low temperature of 15°F.

It's important to remember that USDA zone info for Palmdale is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Palmdale it frosts late in the year after March 15 so make sure that you are ready to protect your calibrachoa if you have a surprise late frost.

USDA Zone Info for Palmdale

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Palmdale

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