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.

A way of estimating when you can plant primroses is to examine the USDA zone info for Yonkers.

Planting Calendar for Primroses

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

Primroses are very cold tolerant which tells us that you can get them planted much earlier than plants that are more sensitive to the cold.

The earliest that you can plant primroses in Yonkers 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 really do well. Starting your primroses indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Yonkers. You should expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Yonkers may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Yonkers you get surprised by a frost after April 15 so make sure that you are prepared to protect your primroses in the event of a surprise late frost.

USDA Zone Info for Yonkers

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Yonkers

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