Its origin is Northern Asia, and its use can be traced back about 5000 years. Rhubarb thrives where summers are cool.
Rhubarb leaves are considered inedible due to their high concentration of oxalic acid. In fact, both the stalks and leaves contain oxalic acid, but the leaves have a much higher content. Oxalic acid is a natural substance found in many plants, including leafy greens, fruits, vegetables, nuts, seeds, and cocoa.
Uses for Rhubarb Leaves in the Home and Garden
Weed Barrier and Mulch.
Garden Stepping Stones.
Bird Bath.
Cleaning Solution.
Organic Insecticide.
Natural Dye.
Compost.
What part of rhubarb is edible?
stalks
Rhubarb can have green or pink to red stalks—similar to celery stalks—and large green leaves. The only part of the plant that is edible is the stalk; the leaves are unsafe to eat and must be removed and discarded. The tart-flavored stalks are typically served sweetened and cooked.
