Host an Event Volunteer Join Tickets

Support the plant database you love!

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

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
1 rating

Wednesday - April 10, 2013

From: Friendswood, TX
Region: Southwest
Topic: Non-Natives, Poisonous Plants, Shrubs
Title: Toxicity of non-native red-tip photinia to fish from Friendswood TX
Answered by: Barbara Medford

QUESTION:

Mr. Smarty Plants, I have seen several questions on Red Tip Photinia (RTP) concerning toxicity to horses, dogs and children. We recently lost over 100 gold fish and 6 large KOI in our man made back yard pond that we have had 8 years. I see an abundance of the RTP blossoms in the pond and an oil sheen in the water. My question is, are this blossoms toxic to fish?

ANSWER:

Here is a previous Mr. Smarty Plants answer that tells you what we think of Red-Tip Photinias. As it happens, we are committed to the growth, propagation and protection of plants native not only to North America but to the area in which those plants grow natively; in your case, Galveston and Harris Counties. PLANTS, that is, we don't know much of anything about fish except how to fry them.

We found a website from the Koi and Water Garden Society of Central New York on Plants Poisonous to Fish. Photinia is not on that list; in fact, we don't think we have seen it claimed to be poisonous to horses, dogs and children. We think you should look around at some websites on possible contamination on the water in that pool. We have no experience with fish ponds, having grown up in West Texas, where there is not much water for anything, but it occurs to us that the oil sheen in the water would be a warning sign, and not something that could have been caused by the photinia. For instance, has anyone been spraying pesticides and/or herbicides in your area lately?

 

More Poisonous Plants Questions

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

Grasses for horses in Austin
October 27, 2012 - Hello Mr. Smarty Plants We just bought 4.5 acres in Travis County off HWY 290. We have 3 horses we keep on it but there is very little grass in the pastures. What is the best type of grass to seed ...
view the full question and answer

Is it quantity that makes silver nightshade poisonous to people?
September 18, 2012 - I have a recipe for Asadero cheese that uses silverleaf nightshade and have eaten this cheese many times. Is it too much quantity that makes it poisonous to people?
view the full question and answer

Need information about the toxicity of some newly acquired plants in Austin, TX
January 04, 2010 - Hi Mr. Smarty Plants, I just got a Carolina Buckthorn tree, a silk tassel, a wafer ash, and an escarpment black cherry tree. I wonder if any of these trees produce berries that would be poisonous to ...
view the full question and answer

Horse-friendly plants for Powell OH
September 24, 2010 - I am looking for horse friendly plants, i.e., shrubs, trees, bushes, etc. that can be planted in wet area in Ohio. Thank you in advance for your assistance.
view the full question and answer

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