Rent Shop Volunteer Join

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
Not Yet Rated

Monday - May 02, 2011

From: Redding, CA
Region: California
Topic: Trees
Title: Trees non-toxic for horses in California
Answered by: Nan Hampton

QUESTION:

I would like to plant next to my pasture. Please send a good variety of nontoxic (for horses) plants for shade. I live in Redding Cal.

ANSWER:

First, let me tell you which trees are not safe to plant around horses.  Avoid all Quercus species (oaks) and Prunus species (plums, peaches, cherries, apricots, etc.).  Also, do not plant Acer rubrum (scarlet maple) or any Acer species—see Toxic Plants of Texas.  Most pine species are not listed on any toxic plant database, but Pinus ponderosa (Ponderosa pine) does appear on several of the databases below and should not be planted near cattle or horses.

Now, here are some trees native to Shasta County that are safe and will provide shade for them:

Fraxinus dipetala (California ash) is a small deciduous tree (up to 20 feet) with fragrant white flowers.  Here are photos and more information.

Populus fremontii (Fremont cottonwood) is fast-growing and grows to 60 feet, but it does like moderate water.  Female plants produce cotton (the seeds), male plants do not.  The 'Nimbus' variety is male.  Here are more photos and information.

Platanus racemosa (California sycamore) grows fast and can reach 30 to 80 feet, but will need water until established.  Here are more photos and information.

Cercis orbiculata [syn. Cercis occidentalis var. orbiculata] (California redbud) is a small tree (up to 15 feet) with pink blossoms in the spring.  Here are more photos and information.

Umbellularia californica (California laurel) is evergreen and a slow-grower to 40 feet.  Here are more photos.

Abies concolor (Balsam fir) is evergreen and grows 50 to 150 feet high.

Cornus nuttallii (Pacific dogwood) grows 15 to 40 feet high and has showy flowers.

Here are databases that you can use to check on toxicity of plants to horses and other animals:

ASPCA's Toxic and Non-Toxic Plant List - Horses  [Note:  The first list is for plants toxic to horses and the second list is for plants non-toxic to horses.]

Horse Nutrition: Poisonous Plants from Ohio State University Extension Service

10 Most Poisonous Plants for Horses from Equisearch

California Poison Control System

Pennsylvania's Poisonous Plants from the Universtiy of Pennsylvania

Cornell University Plants Poisonous to Livestock

Toxic Plants of Texas

Poisonous Plants of North Carolina

Canadian Poisonous Plants Information System

Here are photos from our Image Gallery of some of the plants listed above:


Populus fremontii


Platanus racemosa


Cercis orbiculata


Umbellularia californica


Abies concolor


Cornus nuttallii

 

 

 

More Trees Questions

Possible sawflies on loblolly pine (Pinus taeda)
May 03, 2011 - My pine trees looked great a week ago, now one from top to bottom is almost without needles. It is covered with greenish caterpillars. They have several stripes down their back . Could these be saw fl...
view the full question and answer

Trimming a bur oak in Llano, TX
February 06, 2009 - We have a beautiful, large Burr Oak next to our house. This tree has many large lateral branches. I have trimmed dead branches, but no other trimming. It grows a lot of "suckers" during growing sea...
view the full question and answer

Will a gift yucca survive in Northwest Arkansas?
June 28, 2011 - Had received a yucca tree as a gift and wondering if it will survive in the ground here in northwest Arkansas. It has a complete tropical look compared to my regular yucca plants. I believe it's actu...
view the full question and answer

Problems with non-native Chinaberry tree from Tucson AZ
September 05, 2013 - I have a 30+ year old Chinaberry tree and this year the branches are much sparser with leaves and there are a lot of small dead branches. Should I fertilize and what should I use? Thank you
view the full question and answer

When is the appropriate time to prune pecan trees in Hewitt?
September 07, 2008 - Labor Day Weekend my husband decided to trim all the low branches on a big pecan tree in our back yard which I thought should had been done at the first of the year, our temprature is in the mid 90's...
view the full question and answer

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