One of the best tools that you have as gardeners to help us figure out 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.

The USDA zone info for Palmdale should be reviewed to estimate when it's a good idea to plant alternaria.

Planting Calendar for Alternaria

Frost tolerance for alternaria:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since alternaria do not do well in cold weather you have to wait until after all chance of frost has passed before you can plant them.

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

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

Last Frost Date

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

Always keep in mind that USDA zone info for Palmdale is an average and the actual date of last frost will vary from year to year. Half of the time in Palmdale you get surprised by a frost after March 15 so be sure to be ready to protect your alternaria if you have one of those late frosts.

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.