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
Not Yet Rated

Monday - June 16, 2008

From: Hillsdale, MI
Region: Midwest
Topic: Plant Identification
Title: Identification of thorny plant in Michigan
Answered by: Nan Hampton

QUESTION:

i live in southern michigan and have a thorny plant with oval leaves growing in my flower beds. this used to be a grassy area how did it get there. i live on the edge of town. what plants in my area have thorns

ANSWER:

Here are some possibilities for your plant:

Laportea canadensis (wood nettle or Canada nettle). Here is another photo of the plant.

Rubus flagellaris (northern dewberry) and Rubus pensilvanicus (Pennsylvania blackberry)

Rosa palustris (swamp rose)

Smilax tamnoides (bristly greenbriar)

Solanum carolinense (Carolina horsenettle)

Solanum rostratum (buffalobur nightshade)

Xanthium strumarium (rough cockleburr)

If none of these happens to be it, please send us a photo and we will do our very best to identify it. Visit the Ask Mr. Smarty Plants page for instructions on how to submit photos under "Plant Identification".

How did this plant get there? The most likely way is that its seed was deposited there by a bird or mammal who consumed the fruit somewhere else.


Rubus flagellaris

Rosa palustris

Solanum carolinense

Solanum rostratum

Xanthium strumarium

 

 

More Plant Identification Questions

Identification of shrub with pink catalpa-like flowers
July 31, 2013 - Ironically, this plant is growing on a hill behind a nursery. We are all curious what it could be..I've done internet searches for 2 days. My best guess is that it's in the catalpa family, but it's...
view the full question and answer

Identification of tree in California
May 02, 2012 - A medium-size tree with shiny green leaves toward the bottom and garnet red ones toward the top of the tree. The leaves are narrow with saw-toothed edges. There are clustered small white flowers with ...
view the full question and answer

Blue vervain native to Indiana
January 06, 2003 - I have a species I need to know if it is native to my area (southern Indiana) - Blue Vervain (Verbena hastata)
view the full question and answer

Removing non-native plants appearing in Austin in early spring
March 14, 2012 - In order to know which plants to keep and which to remove, is there a source to look up and identify common non-native plants that are seen in Austin about this time of the year (late winter, early Sp...
view the full question and answer

Plant ID in Springfield OR
July 08, 2009 - I recently discovered a wildflower closely resembling the Oregon Lady Slipper, apparently a wild orchid, but with many blooms on a single long stem and with no apparent leaves. I'd like more informat...
view the full question and answer

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