One of the first steps you take when you are making a decision about 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.

You should be able to estimate when to plant blue lace flowers by reviewing the USDA zone info for Aspen.

Planting Calendar for Blue Lace Flowers

Frost tolerance for blue lace flowers:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant blue lace flowers slightly earlier in the year because they are barely cold tolerant.

The earliest that you can plant blue lace flowers in Aspen is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant blue lace flowers and expect a good harvest is probably August. You probably don't want to wait any later than that or else your blue lace flowers may not have a chance to grow to maturity. You can get started a little bit earlier by starting your blue lace flowers indoors.

Last Frost Date

The average date of last frost is April 15 in Aspen. You can expect an average low temperature of -15°F in the coldest months of winter.

It's important to remember that USDA zone info for Aspen may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Aspen there is a last frost after April 15 so just be sure to be ready to protect your blue lace flowers in the event of a late frost.

USDA Zone Info for Aspen

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Aspen

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