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.

You can determine when you can plant zinnia in Adelanto by reviewing the USDA zone info.

Planting Calendar for Zinnia

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

Since zinnia are not cold tolerant it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant zinnia in Adelanto 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 zinnia and expect a good harvest is probably August. If you wait any later than that and your zinnia may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your zinnia indoors.

Last Frost Date

On average the last frost is on March 15 in Adelanto. In the coldest months of winter you can expect an average low temperature of 15°F.

Keep in mind that USDA zone info for Adelanto is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Adelanto you get a frost after March 15 be ready to protect your zinnia if you have a surprise late frost.

USDA Zone Info for Adelanto

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 Adelanto

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