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.

In Silverton you can figure out when it's the best time to plant asparagus fern by referring to the USDA zone info.

Planting Calendar for Asparagus Fern

Frost tolerance for asparagus fern:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant asparagus fern until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant asparagus fern in Silverton is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant asparagus fern and expect a good harvest is probably August. You probably don't want to wait any later than that or else your asparagus fern may not have a chance to really do well. You can get started a little bit earlier by starting your asparagus fern indoors.

Last Frost Date

The average date of last frost is March 15 in Silverton. You should expect an average low temperature of 10°F in the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Silverton and it is different every year. Half of the time in Silverton it frosts late in the year after March 15 so just be sure to be ready to protect your asparagus fern if you have a late frost.

USDA Zone Info for Silverton

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Silverton

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