Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant primroses in Monaca can be figured out by using the USDA zone info.

Planting Calendar for Primroses

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

Primroses do ok in quite a bit of cold which tells us that you can plant them quite a bit earlier in the year than other frost tender plants.

The earliest that you can plant primroses in Monaca 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 primroses and expect a good harvest is probably September. Any later than that and your primroses may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your primroses indoors.

Last Frost Date

On average the last frost is on April 15 in Monaca. You can expect an average low temperature of -5°F in the coldest months of winter.

Remember that USDA zone info for Monaca is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Monaca you get a frost after April 15 so just be sure to be ready to protect your primroses if you have a surprise late frost.

USDA Zone Info for Monaca

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 Monaca

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