Before planting it is a good idea to find your USDA Zone info to estimate 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 Troutdale you can determine when it's possible to plant hibiscus by checking out the USDA zone info.

Planting Calendar for Hibiscus

Frost tolerance for hibiscus:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably not a good idea to plant hibiscus until after all chance of frost has passed because they are not cold tolerant.

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

Last Frost Date

The average date of last frost is March 15 in Troutdale. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Troutdale is an average the actual date of last frost will vary from year to year. Half of the time in Troutdale it frosts late in the year after March 15 so be sure to be ready to protect your hibiscus if you have 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.