One of the first steps you take when you are figuring out 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.

You can determine when it's possible to plant tagetes in Healdsburg by using the USDA zone info.

Planting Calendar for Tagetes

Frost tolerance for tagetes:	Not tolerant of frost.
When to plant:	After the last frost.

Since tagetes are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant tagetes in Healdsburg 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 tagetes and expect a good harvest is probably September. Any later than that and your tagetes may not have a chance to grow to maturity. Starting your tagetes indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Healdsburg. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Healdsburg may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Healdsburg you get a frost after February 15 so make sure that you are prepared to cover your tagetes if you have a surprise late frost.

USDA Zone Info for Healdsburg

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 Healdsburg

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