Rhubarb Central.com, a Rhubarb website


Are Rhubarb Leaves Poisonous?

 Make a Natural Insecticide with the Leaves


Rhubarb leaves are considered poisonous due to the fact that they contain high levels of Oxalic Acid. Oxalic Acid is sometimes called "ethane diacid". 

The edible portion of rhubarb, the stalks, contain only a very low concentrate of oxalates, and are very safe to eat.

Oxalic acid is also found in safe amounts in cabbage, spinach, potatoes and peas, amongst others.

 The fact that the leaves are considered to contain oxalic acid is NOT a reason not to enjoy eating rhubarb. The stalks are what is harvested to eat, not the leaves!

Scroll down for a recipe to make a homemade natural insecticide using your rhubarb leaves, and a link to many more recipes for natural and organic pesticides and insecticides.


Collage Image of Rhubarb LeavesLeaves of the Rhubarb Plant

Oxalic acid is a poisonous, colorless substance commonly used in products such as metal polishes, stain removers, bleaches, and anti-rust products.

Some of the symptoms of Oxalic Acid poisoning include, abdominal pain, collapse, convulsions, kidney problems, low blood pressure, mouth pain, shock, throat pain, tremors, vomiting, weak pulse. (Information Source: Medline Plus). 







Use precautions when harvesting rhubarb by trimming the leaves from the stalks immediately, not using stalks from plants that have been "frost bitten", and washing the stalks before using them, and before preparing them for the freezer or for canning rhubarb.

Children should be taught to eat only the rhubarb stalks, (if they do not find the raw rhubarb too tart!), with adult supervision.


See Also: Rhubarb Allergy Information


The leaves of rhubarb should never be fed to animals. Some animals such as goats and pigs, have also been poisoned by ingesting these leaves.

Many visitors ask, " Can rhubarb leaves be composted? "

It would stand to reason that if the leaves are poisonous, then adding them to compost would be a concern.

However, since the oxalic acid is broken down, diluted and pH balanced quite quickly, this is not a concern.

Since humans and animals do not normally ingest matter from a compost, rhubarb leaves should be able to be added safely to the compost.

Go here for more information and tips for composting rhubarb leaves.

Interestingly, the leaves of rhubarb can be used to make a natural insecticide.

If you have a large rhubarb patch, you may be interested in making this natural insecticide using the leaves after picking your rhubarb. 


A Recipe for Natural Insecticide Using Rhubarb Leaves


Rhubarb Leaf - Rhubarb Leaves Used for Natural Insecticide

Boil 500 grams of rhubarb leaves in a few pints of water for about 20 minutes.

Allow leaf mixture to cool.

Strain the liquid into a CHILD PROOF/SAFE suitable container.

Add a tiny bit of dish detergent or soap flakes, (not laundry detergent).

Using a spray bottle, spray on leaves to kill off bugs such as aphids and spider mites, June bugs, and fungus diseases.

*NOTE - DO NOT spray this product on ANYTHING edible. Rhubarb leaves contain high amounts of oxalic acid, and are poisonous, and could cause death.  







If you are interested in more recipes to make simple homemade Natural Pesticides and Insecticides, Go here


Here are additional pages within this website that provide helpful information about growing rhubarb in the home garden (or use the website's navigation bars):

GROWING Rhubarb

FORCING Rhubarb

Rhubarb PLANT CARE

Rhubarb VARIETIES

ORNAMENTAL Rhubarb

PLANTING Rhubarb

TRANSPLANTING Rhubarb

Rhubarb COMPANION Gardening

More COMPANION Plant Ideas

HARVESTING Rhubarb

Rhubarb SEEDS

Rhubarb FLOWERS

Rhubarb PESTS

Rhubarb DISEASES

ORGANIC Rhubarb

LINKS RELATED TO RHUBARB GARDENING

ORGANIC PESTICIDE RECIPES and Information

EASIEST Vegetable to GROW

WEED CONTROL Tips

WHERE to Grow Rhubarb

How to GET RID OF SLUGS

CONTAINER GARDENING - Can Rhubarb be Grown in Containers/Pots?

Yorkshire FORCED RHUBARB




TOP of Rhubarb Leaves 
 
HOME to Homepage of Rhubarb-Central.com


Copyright ©2010-2017  Rhubarb-Central.com
All Rights Reserved Worldwide

No Reproduction Permitted Without the Expressed
Written Consent of the Site Owner

* Rhubarb-Central.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

Please use the "like" button and help to keep this free rhubarb resource website alive. Thanks! :)

Custom Search

Lil' Rhubarb Shop to Buy rhubarb Products

(CLICK to Enter)


No More
Burned Pie Crust


Talisman Designs Adjustable Pie Crust Shield


Get the
Pie Crust Shield!



Subscribe To
This Site

XML RSS Feedly RSS button
Add to My Yahoo!

Rhubarb Central Facebook Page
Love Rhubarb Recipes at Rhubarb Central

 Please Visit 

My "Sister" Sites:

Raspberry Recipes

Peach Recipes

Apple Recipes



Special Occasion Recipes

Easter Recipes

Thanksgiving Recipes

Christmas Recipes

New Year's Eve Recipes


Free Homemade Organic/Natural Pesticide Recipes


*My Gardening
Favorites...

(click on image)
_ _ _ _ _ _ _ _ _ _

composter

gardening scooter

Electric Tiller/Cultivator

Fiskars Garden Bucket Caddy


- - - - - - - - - - - - -

...and Gift Ideas




✺✺✺
Adjust Dinner
Using
Your Smart Device!
⇩⇩⇩⇩