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.

In Plymouth you can determine when it's a good idea to plant oriental poppies by using the USDA zone info.

Planting Calendar for Oriental poppies

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

Oriental poppies can survive in moderate cold which means that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant oriental poppies in Plymouth 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 oriental poppies and expect a good harvest is probably September. Any later than that and your oriental poppies may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your oriental poppies indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Plymouth. It might get as low as -10°F during the coldest months of winter.

Keep in mind that USDA zone info for Plymouth is an average and the actual date of last frost will vary from year to year. Half of the time in Plymouth last frost occurs after April 15 so just be sure to be ready to protect your oriental poppies in the event of a surprise late frost.

USDA Zone Info for Plymouth

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 Plymouth

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