The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when to plant melons in Tualatin by using the USDA zone info.

Planting Calendar for Melons

Frost tolerance for melons:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant melons until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant melons in Tualatin 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 melons and expect a good harvest is probably August. Any later than that and your melons may not have a chance to really do well. You can get started a few weeks earlier by starting your melons indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Tualatin. You can expect an average low temperature of 15°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is an average because it is based on the USDA zone info for Tualatin and it changes from year to year. Since half of the time in Tualatin you get surprised by a frost after March 15 be ready to protect your melons in the event of a late frost.

USDA Zone Info for Tualatin

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 Tualatin

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