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
Not Yet Rated

Tuesday - April 22, 2008

From: pahrump, NV
Region: Rocky Mountain
Topic: Pruning, Herbs/Forbs
Title: Browning of leaf tops on Iris plants
Answered by: Barbara Medford

QUESTION:

My Iris plants bloomed beautifully, now some of the leaves are turning brown from the top down, about half way. Is this normal? What can I do about it and should I cut off the brown leaves? Also, what causes this?

ANSWER:

Irises are very tough and, unless you have borers in the rhizomes, it is okay for them to have some brown leaf tips. We always liked to trim them off below the browning with a sharp scissors or pruner, and at a diagonal. No particular reason, it just seemed more attractive that way. You need to leave as much healthy leaf as you can, as the leaves are the manufacturing facilities building up the root systems of the iris and preparing the rhizomes to expand and give you more blooms next year. In the Fall, you can trim off all the leaves the same way, in a fan, about 4 to 5 inches above the root system. Clean out any dead litter around the rhizomes to help prevent disease or mold. See this page of Images of iris care. Some of the images can be clicked on for more information.

 

More Pruning Questions

Deadheading cannas and geraniums
August 17, 2007 - I'm new to gardening. Your help would be appreciated. 1) I think I read that canna flowers can be deadheaded so they will continue to bloom throughout the summer. What part is actually taken off? ...
view the full question and answer

Sprouts from stems of plants from Happy Yard IN
September 28, 2013 - Is it normal for a plant to start a sprout from its own root system next to the stock/stem? Is it trying to regrow?
view the full question and answer

How to remove plume from Yucca elephantipes in NJ?
August 02, 2011 - In Manahawkin, NJ, how do we cut plume (2" diameter) off 10' Yucca elephantipes?
view the full question and answer

Pruning Roughleaf dogwood
November 28, 2013 - We put 5 rough-leaf dogwoods along our side deck; having been told (by the local, natural plant seller) that they would reach a maximum height of 6 feet. They have grown taller than that (despite som...
view the full question and answer

Leggy purple coneflower
August 20, 2007 - Last year I planted purple coneflowers and this year when they bloomed they were extremely tall & leggy. I'd like next year to get them to be shorter and fuller. How do I do that & is it something ...
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