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 first opportunity to plant tree onions in East Wenatchee should be determined by using the USDA zone info.

Planting Calendar for Tree onions

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

Tree onions do ok in moderate cold which means that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant tree onions in East Wenatchee 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 tree onions and expect a good harvest is probably August. If you wait any later than that and your tree onions may not have a chance to really do well. You can get started a few weeks earlier by starting your tree onions indoors.

Last Frost Date

The average date of last frost is April 15 in East Wenatchee. In the coldest months of winter you should expect an average low temperature of 0°F.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for East Wenatchee and it is different every year. Half of the time in East Wenatchee last frost occurs after April 15 so just be sure to be ready to cover your tree onions in the event of a surprise late frost.

USDA Zone Info for East Wenatchee

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in East Wenatchee

You may be interested in your other planting guides for East Wenatchee.