Rhubarb -- Frost Damage
Leaf injury may be noticeable with some brown or black discoloration on the edges. Severe cold injury may cause the oxalic acid crystals in the leaves to migrate to the stalks when poisoning problems can occur.
If in doubt concerning the safety of eating the stalks, DON'T. Cut those stalks off and compost. Allow new stalks to develop before eating.
Articles in this collection were copyrighted 1995 by the Board of Trustees of the University of Illinois. For full copyright information about the articles in this encyclopedia, click here.