One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant hollyhocks in Sutherlin can be determined by referring to the USDA zone info.

Planting Calendar for Hollyhocks

Frost tolerance for hollyhocks:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Hollyhocks are one of those plants that can tolerate a little bit of cold weather which tells us that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant hollyhocks in Sutherlin 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 hollyhocks and expect a good harvest is probably September. You probably don't want to wait any later than that or else your hollyhocks may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your hollyhocks indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Sutherlin. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Sutherlin may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Sutherlin last frost occurs after March 15 so always be ready to protect your hollyhocks if you have a late frost.

USDA Zone Info for Sutherlin

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 Sutherlin

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