One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Archbald you can estimate when it's the best time to plant missouri primrose by looking at the USDA zone info.

Planting Calendar for Missouri Primrose

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

Missouri Primrose are moderately cold tolerant which tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant missouri primrose in Archbald 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 missouri primrose and expect a good harvest is probably September. If you wait any later than that and your missouri primrose may not have a chance to really do well. You can get started a little bit earlier by starting your missouri primrose indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Archbald. It might get as low as -10°F during the coldest months of winter.

It's important to remember that USDA zone info for Archbald is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Archbald you get a frost after April 15 so make sure that you are ready to protect your missouri primrose if you have a surprise late frost.

USDA Zone Info for Archbald

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Archbald

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