One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Walnut it's a good idea to estimate when it's a good idea to plant iceland poppy.

Planting Calendar for Iceland Poppy

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

Iceland Poppy do well in mild cold which means that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant iceland poppy in Walnut is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant iceland poppy and expect a good harvest is probably October. If you wait any later than that and your iceland poppy may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your iceland poppy indoors.

Last Frost Date

In Walnut the average date of last frost happens on January 31. In the coldest months of winter you should expect an average low temperature of 30°F.

Keep in mind that USDA zone info for Walnut is an average and the actual date of last frost changes from year to year. Since half of the time in Walnut there is a last frost after January 31 be ready to protect your iceland poppy if you have a surprise late frost.

USDA Zone Info for Walnut

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Walnut

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