Name: D E
I have been in Washington state and noticed the large
amount of wild blackberry bushes. Someonetold me that Black berries
harvested in late October will make a person sick. That doesn't seem right.
Is there a proper time to pick these wild berries?
The following might be helpful:
Raspberries and blackberries generally have two crops per year. The second
crop is often late and subject to warm days and cold nights, and sometimes
molding during a rainy autumn. Thus, the first crop is the preferred one
(around July/August) and the second is usually not as good but I personally
haven't heard about anyone getting sick from blackberries at any time of
the year, although excessive amounts of any food could cause sickness, and
should watch out for mold on berries.
Anthony R. Brach, Ph.D.
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Update: June 2012