Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Oak Harbor it's possible to determine when it's possible to plant snow-in summer.

Planting Calendar for Snow-in Summer

Frost tolerance for snow-in summer:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since snow-in summer do well in moderate cold you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant snow-in summer in Oak Harbor 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 snow-in summer and expect a good harvest is probably September. Any later than that and your snow-in summer may not have a chance to grow to maturity. If you are starting your snow-in summer indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Oak Harbor the average date of last frost happens on March 15. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Oak Harbor is not always accurate the actual date of last frost changes from year to year. Half of the time in Oak Harbor there is a last frost after March 15 so make sure that you are prepared to cover your snow-in summer in the event of one of those late frosts.

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.