When to Plant Garlic in Spencer, IA

Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Spencer can be read to figure out when to plant garlic.


Planting Calendar for Garlic

Frost tolerance for garlic: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Since garlic do well in cold you can plant them much earlier in the year than other frost tender plants.

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

The earliest that you can plant garlic in Spencer is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant garlic and expect a good harvest is probably September. If you wait any later than that and your garlic may not have a chance to fully mature. Starting your garlic indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Spencer. In the coldest months of winter you should expect an average low temperature of -20°F.

It's important to remember that USDA zone info for Spencer may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Spencer there is a last frost after April 15 be ready to protect your garlic if you have a surprise late frost.

USDA Zone Info for Spencer

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Spencer

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