• The yucca plant has a dense flowerhead with white or green flowers.yucca - flourishing image by Dagmara Czechowska from Fotolia.com
  
  Yucca plants are trees or shrubs commonly found in North and Central America. They are used in soaps, natural remedies and as a source of fiber. Ingesting too much of the root of the yucca plant causes side effects. The stalk also is used in herbal remedies. It is not difficult to identify the yucca plant. It has long, sword-like leaves that are evergreen and crowded on a thick trunk. The leaves are stiff. It can grow up to 20 feet in height and is typically located at the base of desert mountains.
  
  

Bowel Problems

• Ingesting several times the recommended amount of the yucca root herbal remedy can result in loose stools, according to the University of Michigan Health Systems. Yucca root powder comes in capsules and these can be swallowed with water or the powder is useful in making a tea.
  
  

Hemolysis

• In test tubes, high amounts of yucca and other plants containing saponins, results in bursting red blood cells, according to the University of Michigan Health Systems. This is called hemolysis. Not enough research has been done to determine if this happens in the human body when ingested by mouth.
  
  

Absorption of Vitamins

• Using yucca root herbal remedies for more than three months consecutively is not recommended. It can interfere with the absorption of fat-soluble vitamins in the body, according to the University of Michigan Health Systems.
  
  

Allergic Rhinitis

• The ornamental use of yucca plants in your landscaping is linked to higher frequencies of allergic rhinitis in individuals, according to the Drugs.com website. Therefore, if you suffer with this seasonal allergy, it is best not to use it in your yard.