The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for Oak Harbor you should be able to determine when it's a good idea to plant scallions.

Planting Calendar for Scallions

Frost tolerance for scallions:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Scallions are barely cold tolerant which tells us that you can get them planted just a bit earlier than other plants that might not handle the cold.

The earliest that you can plant scallions in Oak Harbor is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant scallions and expect a good harvest is probably August. You probably don't want to wait any later than that or else your scallions may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your scallions indoors.

Last Frost Date

The average date of last frost is March 15 in Oak Harbor. You can expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Oak Harbor is just an average and the actual date of last frost will vary from year to year. Since half of the time in Oak Harbor it frosts late in the year after March 15 be ready to protect your scallions if you have a surprise late frost.

USDA Zone Info for Oak Harbor

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

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

Plants to Grow in Oak Harbor

You may be interested in your other planting guides for Oak Harbor.