One of the first steps you take when you are determining 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 getting a good idea when you can plant zinnia is to examine the USDA zone info for Woodland.

Planting Calendar for Zinnia

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

You really shouldn't plant zinnia until after the last frost has passed because they require warm weather.

The earliest that you can plant zinnia in Woodland 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 zinnia and expect a good harvest is probably September. 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

The average date of last frost is February 15 in Woodland. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Woodland is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Woodland there is a last frost after February 15 be ready to cover your zinnia in the event of a late frost.

USDA Zone Info for Woodland

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 Woodland

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