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.

One way of determining when you can plant eggplants is to use the USDA zone info for Troutdale.

Planting Calendar for Eggplants

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

Eggplants do not do well in cold weather which tells us that you have to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant eggplants 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 eggplants and expect a good harvest is probably August. If you wait any later than that and your eggplants may not have a chance to grow to maturity. If you are starting your eggplants indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Troutdale the average date of last frost happens on March 15. It might get as low as 15°F during the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Troutdale and it can change quite a bit from year to year. Half of the time in Troutdale you get a frost after March 15 so always be ready to protect your eggplants in the event of one of those late frosts.

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.