One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when you can plant diascia is to look at the USDA zone info for Port Angeles.

Planting Calendar for Diascia

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

Diascia do ok in mild cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant diascia in Port Angeles 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 diascia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your diascia may not have a chance to fully mature. Starting your diascia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Port Angeles may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Port Angeles you get surprised by a frost after March 15 so make sure that you are ready to protect your diascia if you have a late frost.

USDA Zone Info for Port Angeles

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 Port Angeles

You may be interested in your other planting guides for Port Angeles.