The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Happy Valley you can estimate when it's possible to plant arctotis by using the USDA zone info.

Planting Calendar for Arctotis

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

Arctotis tend to make it in moderate cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant arctotis in Happy Valley 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. Any later than that and your arctotis may not have a chance to fully mature. If you are starting your arctotis indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Happy Valley. It might get as low as 15°F during the coldest months of winter.

Keep in mind that USDA zone info for Happy Valley may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Happy Valley there is a last frost after March 15 be ready to protect your arctotis in the event of one of those late frosts.

USDA Zone Info for Happy Valley

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 Happy Valley

You may be interested in your other planting guides for Happy Valley.