One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant garlic in Blue Island should be estimated by using the USDA zone info.

Planting Calendar for Garlic

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

You can plant garlic a lot earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant garlic in Blue Island 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 grow to maturity. You can get started a little bit earlier by starting your garlic indoors.

Last Frost Date

The average date of last frost is April 15 in Blue Island. You should expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Blue Island may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Blue Island there is a last frost after April 15 so make sure that you are ready to protect your garlic if you have one of those late frosts.

USDA Zone Info for Blue Island

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Blue Island

You may be interested in your other planting guides for Blue Island.