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
1 rating

Tuesday - August 29, 2006

From: Salem, OR
Region: Northwest
Topic: Invasive Plants, Problem Plants
Title: Disposal of bulbs to control Arrowhead aquatic plant
Answered by: Nan Hampton

QUESTION:

How can I kill Arrowhead permanently? I have sprayed repeated years with Roundup, Crossbow, etc., but the arrowhead comes back from the bulb the next year!

ANSWER:

Short of importing flocks of ducks to eat the "potatoes", the most effective way to control arrowhead (Sagittaria sp.) is dig up and dispose of the bulbs along with the plants. Depending on how large your lake or pond is, you might consider removal by machine. Chapter 5—Aquatic Plant Management Techniques—in Aquatic Plant Management In Lakes and Reservoirs (prepared by the North American Lake Management Society and the Aquatic Plant Management Society) describes mechanical removal and other control methods for problem aquatic plants. Since arrowhead must be rooted in relatively shallow waters another solution is to eliminate the shallow water areas by mechanically increasing the depth at the edges of your pond. There are also dyes that you can add to the water to decrease available sunlight to plants growing in the water, thus limiting their growth.

 

More Invasive Plants Questions

Plants that will do well in a water retention basin in White Stone Virginia
May 23, 2011 - I am looking for plants to grow under pine trees in a water retention basin. The pine trees line the basin. When it rains it will hold water for about two to three days before evaporating. I have p...
view the full question and answer

Is Mimosa pudica poisonous from Janesville WI
February 21, 2014 - I have just recently learned of Mimosa Pudica also known as the sensitive plant. I see using the USDA website that it can be found in the USA so I think that covers the North America aspect. I have b...
view the full question and answer

Ivy a suitable ground cover in Live Oaks from Gulfport MS
April 17, 2014 - Will Ivy be a safe and suitable ground cover for old growth Live Oak trees in coastal Mississippi?
view the full question and answer

Invasive iceplant in Hawaii
October 29, 2008 - Last time I checked Hawaii was in North America. Invasive or not, iceplant continues to be a much used ground cover etc for golf courses, sides of the freeway and many many City and County projects pr...
view the full question and answer

Removing invasive Dichelostemma firecracker plant from Austin
April 12, 2012 - We have dichelostemma firecracker plant & cannot kill it. We need help in getting rid of this plant. Spent another 3 hours digging up corms this afternoon. It is invading our backyard & want it kil...
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