The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 Keizer should be reffered to in order to estimate when it's the best time to plant marigold.

Planting Calendar for Marigold

Frost tolerance for marigold:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since marigold 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 marigold in Keizer 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. You probably don't want to wait any later than that or else your marigold may not have a chance to grow to maturity. If you are starting your marigold indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Since the USDA zone info for Keizer is an average the actual date of last frost will vary from year to year. Half of the time in Keizer you get a frost after March 15 so be sure to be ready to protect your marigold in the event of one of those late frosts.

USDA Zone Info for Keizer

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 Keizer

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