One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of getting a good idea when to plant arctotis is to check out the USDA zone info for Washougal.

Planting Calendar for Arctotis

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

Arctotis can survive in mild cold which means that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant arctotis in Washougal 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 arctotis and expect a good harvest is probably September. If you wait any later than that and your arctotis may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your arctotis indoors.

Last Frost Date

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

It's important to remember that USDA zone info for Washougal is an average and the actual date of last frost is different every year. Half of the time in Washougal you get a frost after March 15 so always be ready to cover your arctotis in the event of a late frost.

USDA Zone Info for Washougal

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 Washougal

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