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
2 ratings

Sunday - March 29, 2009

From: Boston, MA
Region: Northeast
Topic: Wildflowers
Title: Parasitic paintbrush
Answered by: Joe Marcus and Damon Waitt

QUESTION:

Many years ago I tried to grow some paintbrush seedlings with some seeds you sent me and found it difficult. Based on pictures in the literature I noticed that paintbrushes do not seem to affect their hosts as drastically as other parasites. Lupines and paintbrushes look well together. From your experience is this correct?

ANSWER:

Parasitic plants come in several flavors. Among them, there are obligate parasites, which must parasitize a host plant in order to survive and receives all of its nourishment from the host plant. These plants typically lack chlorophyll. There are facultative parasites which will opportunistically parasitize a host plant given a chance, but can survive and complete its life-cycle without a host. These plants are often called hemiparasites or hemiparasitic plants.

Castilleja indivisa (entireleaf Indian paintbrush) is typical of this group of plants. It can and will parasitize neighboring plants via root connections if living in close proximity, but will also grow and reproduce on its own if no host plant is available. The various species of Indian Paintbrush native to Texas often parasitize plants of the grass family (Poaceae), but they really aren't particularly picky about who their hosts are and will attach themselves to and draw nutrients from any number of plant species. Indian Paintbrushes growing with the assistance of a host plant will almost invariably outgrow a sibling without such benefits. Likewise, a host plant parasitized by a Castilleja will normally suffer quite noticably.

... and, yes, lupines and paintbrushes look terrific together.


Castilleja indivisa


Castilleja indivisa
 

More Wildflowers Questions

Native flowers for cutting for wedding in June
January 25, 2009 - My husband and I are hosting a wedding reception for our daughter and her husband in Austin in June. If possible, we would like to use live flowers or live colorful plants as centerpieces and decorat...
view the full question and answer

Flowers found blooming in February in Austin
November 17, 2010 - For people visiting from other states, which flowers usually bloom in February in Austin?
view the full question and answer

Groundcover for a Sunny, Steep Slope in Maryland
April 29, 2013 - I need a groundcover for a sunny dry steep slope in Towson, Maryland. The slope goes from the parking lot down to a deck area.
view the full question and answer

Illegal to pick wildflowers
March 14, 2004 - Is it illegal to pick wildflowers?
view the full question and answer

Earliest spring wildflower from Richardson TX
September 29, 2009 - What spring wildflower is consistently among the first to bloom in North Texas?"
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center