One of the best tools that you have as gardeners to help us figure out 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.

One way of estimating when it's possible to plant poppies is to refer to the USDA zone info for Broomfield.

Planting Calendar for Poppies

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

You can plant poppies a little earlier in the year because they are moderately cold tolerant.

The earliest that you can plant poppies in Broomfield 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 poppies and expect a good harvest is probably September. You probably don't want to wait any later than that or else your poppies may not have a chance to really do well. You can get started a few weeks earlier by starting your poppies indoors.

Last Frost Date

The average date of last frost is April 15 in Broomfield. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Broomfield is just an average the actual date of last frost will vary from year to year. Half of the time in Broomfield it frosts late in the year after April 15 so make sure that you are prepared to protect your poppies in the event of one of those late frosts.

USDA Zone Info for Broomfield

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 Broomfield

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