One of the best tools that you have as gardeners to help us figure out 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.

By using the USDA zone info for Troutdale it's a good idea to estimate when it's the best time to plant scaevola.

Planting Calendar for Scaevola

Frost tolerance for scaevola:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since scaevola do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant scaevola in Troutdale 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 scaevola and expect a good harvest is probably August. If you wait any later than that and your scaevola may not have a chance to fully mature. Starting your scaevola indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on March 15 in Troutdale. In the coldest months of winter you can expect an average low temperature of 15°F.

Remember that USDA zone info for Troutdale is an average and the actual date of last frost will vary from year to year. Half of the time in Troutdale there is a last frost after March 15 so be sure to be ready to protect your scaevola in the event of a late frost.

USDA Zone Info for Troutdale

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 Troutdale

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