When can I plant Marigold in Zone 1b

Before planting it is a good idea to find our USDA Zone info to estimate our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

One way of determining when it's the best time to plant marigold is to refer to the USDA zone info for Zone 1b.


Planting Calendar for Marigold

Frost tolerance for marigold: Not tolerant of frost.
When you should plant them: After the last frost.

Since marigold are not cold tolerant it's necessary to wait until after the last frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant marigold
Possibly ok, but a risky time to plant marigold
Probably not a good time to plant marigold

The earliest that you can plant marigold in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant marigold and expect a good harvest is probably July. If you wait any later than that and your marigold may not have a chance to grow to maturity. Starting your marigold indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Zone 1b the average date of last frost happens on June 15. We can expect an average low temperature of -55°F in the coldest months of winter.

Remember that USDA zone info for Zone 1b is an average and our actual date of last frost will vary from year to year. Half of the time in Zone 1b last frost occurs after June 15 so be sure to be ready to protect your marigold in the event of a surprise late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.