One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. 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 Delta should be looked at to determine when you can plant garlic.

Planting Calendar for Garlic

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

Garlic are very cold tolerant which tells us that you can plant them much earlier than more sensitive plants.

The earliest that you can plant garlic in Delta 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. Any later than that and your garlic may not have a chance to fully mature. You can get started a few weeks earlier by starting your garlic indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Delta. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Delta may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Delta you get surprised by a frost after April 15 so always be ready to cover your garlic in the event of a late frost.

USDA Zone Info for Delta

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Delta

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