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

You will be able to estimate when it's a good idea to plant primula by looking at the USDA zone info for Ephrata.

Planting Calendar for Primula

Frost tolerance for primula:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Primula do well in cold which means that you can start planting them much earlier than other frost tender plants.

The earliest that you can plant primula in Ephrata 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 primula and expect a good harvest is probably September. You probably don't want to wait any later than that or else your primula may not have a chance to grow to maturity. If you are starting your primula indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Ephrata. It might get as low as -5°F during the coldest months of winter.

It's important to remember that USDA zone info for Ephrata is an average and the actual date of last frost will vary from year to year. Half of the time in Ephrata it frosts late in the year after April 15 so always be ready to protect your primula in the event of a late frost.

USDA Zone Info for Ephrata

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Ephrata

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