When can I plant Datura in Zone 3b

One of the first steps we take when we are making a decision about our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

By reviewing the USDA zone info for Zone 3b it's a good idea to determine when it's possible to plant datura.


Planting Calendar for Datura

Frost tolerance for datura: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

You can plant datura slightly earlier in the year because they are barely cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant datura
Possibly ok, but a risky time to plant datura
Probably not a good time to plant datura

The earliest that you can plant datura in Zone 3b is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant datura and expect a good harvest is probably August. Any later than that and your datura may not have a chance to grow to maturity. Starting your datura indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Zone 3b the average date of last frost happens on May 15. We should expect an average low temperature of -35°F in the coldest months of winter.

It's important to remember that USDA zone info for Zone 3b is not always accurate and our actual date of last frost changes from year to year. Half of the time in Zone 3b we get surprised by a frost after May 15 so always be ready to cover your datura in the event of one of those late frosts.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-35°F
Highest Expected Low-30°F

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

Plants to Grow in Zone 3b

You may be interested in our other planting guides for Zone 3b.