One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when it's a good idea to plant marigold is to refer to the USDA zone info for Woodinville.

Planting Calendar for Marigold

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

It's not a good idea to plant marigold until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant marigold in Woodinville 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 marigold and expect a good harvest is probably August. If you wait any later than that and your marigold may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your marigold indoors.

Last Frost Date

The average date of last frost is March 15 in Woodinville. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Woodinville is not always accurate the actual date of last frost is different every year. Since half of the time in Woodinville you get surprised by a frost after March 15 be ready to protect your marigold if you have one of those late frosts.

USDA Zone Info for Woodinville

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 Woodinville

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