Host an Event Volunteer Join Tickets

Your gift keeps resources like this database thriving!

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?

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
2 ratings

Wednesday - July 13, 2011

From: Las Vegas, NV
Region: Rocky Mountain
Topic: Plant Identification, Shrubs
Title: Identification of shrub with purple flowers in Las Vegas, Nevada
Answered by: Nan Hampton

QUESTION:

Large purple flower shrub, flowers are on long stems. Round flowers with green leaves on the stalks, used as front yard landscaping in a new house in Las Vegas NV. Very drought tolerant, shrub grows to at least 3 feet high. Looks somewhat similar to purple amaranth but purple flowers are at the end of large stalks. Flowers turn a dull purple during summer but do not dry out and fall off. Looking for name of shrub, we want to know if we should cut off the old flowers to promote new ones or just leave the flowers alone.

ANSWER:

In our Native Plant Database I did a COMBINATION SEARCH choosing "Nevada" from the Select State or Province option, "Shrub" from Habit (general appearance) and "Violet", "Purple", "Blue" and "Pink" from Bloom Characteristics–Bloom Color.  I did two more searches substituting "Subshrub" and "Herb" for "Shrub" in the search.  Unfortunately, I could find nothing that matched your description.  That, plus the fact that you describe it as a landscape plant, makes me believe that it is probably a non-native ornamental plant.  Our focus and expertise here at the Wildflower Center are with plants native to North America so we can't really identify or tell you too much about non-natives.  However, you can visit our Plant Identification page to find links to several plant identification forums that can help identify plants, both native and non-native.   If you have a photo, you can send it to one of these for identification.  Another possibility is to try contacting the Southern Area Master Gardener Program of the University of Nevada Cooperative Extension.  If it is a fairly common landscaping plant in Las Vegas, someone with the Master Gardener program is likely to know its name.

 

More Plant Identification Questions

Plant identification, possibly Phytolacca americana (American pokeweed)
August 20, 2010 - I have a patch of plants I can't find what they are, could you help? The plant is a tuber (resembles a carrot when it is small), the stalk is red and fibrous, comes back each year bigger, has green ...
view the full question and answer

Why is Mentzelia oligosperma called chickenthief?
July 15, 2014 - Could you tell me why Mentzelia oligosperma is sometimes called chickenthief?
view the full question and answer

Plant identification
June 25, 2011 - I see a previous question from Ohio on this plant, so I will copy the description and try to submit photos. "A year later a weed-like plant started growing beside it. It has very thorny leaves, stem...
view the full question and answer

Identification of vine in New York
May 15, 2012 - I have a flowering vine that grows against my home and I'm not sure what it is, but it's beautiful with a delicate scent. The flowers look like clusters of mini purple pea pods hanging downward befo...
view the full question and answer

Plant identification, possibly chile pequin
September 17, 2008 - Found in my back yard a plant about 18 inches tall. it has tiny white 5 petal flowers and small (smaller than a pea) fuits. The fruits smell just like bell pepper. My nose itched after smelling it. ...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.