When Can I Plant Marigolds in Zone 4b

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Can I Plant
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One of the best tools that you have as a gardener to help figure out your gardening schedule is the USDA zone info. The zone information's most crucial data reveals the average last frost and the lowest expected temperature for your area.

To determine the appropriate planting time for marigolds, you can utilize the USDA zone information for the 4b region.

Planting Calendar for Marigolds

Frost tolerance for marigolds Not tolerant of frost
When to plant After all chance of frost has passed

Since marigolds cannot tolerate cold, you must wait until there is no risk of frost before planting them.

Visual Calendar for Marigolds

Planting Calendar for Marigolds in Zone 4b

 
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
J
F
M
A
M
J
J
A
S
O
N
D
Frost
Last Frost
First Frost
No Frost in Zone
Start Seeds
Indoors
Direct Sow
Transplant
Transplant Outside
Harvest
Harvest Time
Winter Crop
Winter Crop
Over-winter
Over-winter

Key dates to remember:

 
Start seeds indoors: Mar 15
 
Direct sow seeds: Jun 1
 
Transplant starts outside: Jun 15
 
Summer harvest time: Jul 15
 
Start winter crop: Jun 15
 
Start over-winter: Sep 15

Last Frost Date for Zone 4b

The average date of last frost is May 15 in zone 4b. It might get as low as -25°F (-31°C) during the coldest months of winter.

As the USDA zone information for zone 4b is only an average, the actual date of your last frost will differ annually. Since every microclimate is different, you should also watch the weather forecast closely as you get close to planting time. Watch the weather forecast before planting outside, and have frost protection ready if low temperatures are expected.

USDA Info for Zone 4b

Here is the info for USDA zone 4b.

Average Date of Last Frost (spring) May 15
Average Date of First Frost (fall) 2015-09-15
Lowest Expected Low -25°F (-31°C)
Highest Expected Low -20°F (-28°C)

This means that on a really cold year, the coldest it will get is -25°F (-31°C). On most years you should be prepared to experience lows near -20°F (-28°C).

Other Plants to Grow in Zone 4b

You may be interested in our other planting guides for zone 4b.

Vegetables in Zone 4b

Herbs in Zone 4b

Flowers in Zone 4b

USDA Zones

USDA zones are a popular way of determining which plants can grow in your area. Zones tell you when your average first and last frost date are, as well as how cold you can expect it to get in the winter.

Our site works best if you choose your zone from the list below. If you do not know your USDA zone, then you can use our zone map.

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