En EspaŅol

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
10 ratings

Friday - November 11, 2005

From: Kingman, AZ
Region: Southwest
Topic: Non-Natives
Title: Propagation of non-native, poisonous oleanders
Answered by: Joe Marcus

QUESTION:

How do I propagate oleanders? Can the cuttings be rooted in water? Or is it better to use rooting hormone and stick the cuttings in the soil?

ANSWER:

 

Our area of study and expertise at the Lady Bird Johnson Wildflower Center is limited to native North American plant species. Oleander, Nerium oleander is a native of the eastern Mediterranean, northern Africa and southeastern Asia. The beautiful, but extremely poisonous evergreen shrub has been planted widely in the tropical and sub-tropical parts of the United States for many years.

 

If you wish to propagate your oleander, you should take care not to ingest or otherwise expose yourself to the sap of the plant. All parts very poisonous; even exposure to smoke from burning oleander is harmful. A single leaf ingested by a small child can be fatal and there are many cases of oleander poisoning when branches were used to spear food for grilling.

 

Nerium oleander is best propagated by stem cuttings, but layering and seed propagation are also useful. Oleander stem cuttings can be easily rooted in water. Here is a well written article on Stem Cutting Propagation, published by North Carolina State University. Finally, an excellent resource on oleander culture is the website of the International Oleander Society.

 

More Non-Natives Questions

Toxicity of non-native Royal Empress tree
April 23, 2009 - We want to plant some fast-growing trees for shade for my horses. My friend wants to use Royal Empress trees. Can you tell me if these are toxic to horses (and also goats)? I have a lot of clay in t...
view the full question and answer

Non-native herbs being burned by pool chlorine in St. Petersburg, FL
July 11, 2010 - My herb garden is next to my swimming pool, which is serviced by a company using chlorine. I have found that on the two unsuccessful attempt to establish my herb garden, the herbs burn off after the p...
view the full question and answer

Non-native Japanese red maple exposed to full sun
August 16, 2008 - I planted a Dwarf Japanese Red Maple tree about 3 yrs ago. Until about a month ago it was partially shaded by a massive chestnut tree, that has since been cut down. Now the new growth on my tree appea...
view the full question and answer

Non-native Star Jasmine poisonous to dogs from Dallas
May 20, 2013 - Is star jasmine poisonous to dogs?
view the full question and answer

Disease on non-native French hollyhocks
April 16, 2008 - I live in Georgetown, Texas. I have some French hollyhocks that have some kind of disease on the leaves - I would like to know what to spray them with to get rid of it. It looks like brown blemishes...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center