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?


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

Sunday - June 14, 2009

From: Idaho Falls, ID
Region: Rocky Mountain
Topic: Non-Natives, Seasonal Tasks
Title: Winter-hardiness of hibiscus in Idaho
Answered by: Jackie OKeefe


I bought a hibiscus tree at Sam's Club in Idaho Falls and after planting it, I read the label which says not to go below 50 degrees. Does that mean it is an inside or potted tree to bring in in the winter? Will it die if left planted outside for the Idaho Winter?


At the Lady Bird Johnson Wildflower Center, our mission is to educate people about their native plants, encouraging their use in the landscape. According to The Native Plant Database, there are no hibiscus varieties native to Idaho, and that puts your question out of our real area of expertise.

However, if your plant is not rated for below 50 degrees F, it won't make it through the winter outdoors in Idaho Falls, which is in Zone 5-6 and experiences a cold, continental-climate winter. If it is a tropical hibiscus (Glossy, ovate leaves are characteristic of tropical hibiscus.), even indoors it will probably require some winter supplementary light that far north. Here is a site that provides some advice on growing tropical hibiscus in a northern climate.


More Seasonal Tasks Questions

Cutting Back Perennials in the Fall?
November 13, 2013 - We have large beds of flowering native perennials that we planted around our house as part of a landscape conservation plan (various Joe-Pyes, goldenrods, turtlehead, blazing star, brown-eyed Susans)....
view the full question and answer

Care for penstemons in South Jordan, UT
June 21, 2009 - I have Firecracker Penstemons and they bloomed beautifully this year. How do I trim them and when? Will they continue to bloom throughout the summer?
view the full question and answer

Winter care for plants in Austin
December 05, 2008 - Hello, I'm just getting into the gardening thing, and have planted tons of plants this fall here in Austin. I'm a bit worried about them with winter right around the corner. My first question is r...
view the full question and answer

Pruning cherry laurel in January in Austin
January 07, 2011 - Do trust I checked Q&A first. Can Cherry Laurel shrubs be pruned earlier than late winter in Austin? I foolishly planted 12 native Cherry Laurel standards on our suburban property line 5 years ago. I ...
view the full question and answer

Bluebonnets planted in late spring bloom, will they bloom again?
February 06, 2008 - New to South Texas & we decided to plant bluebonnets around our house. The seeds were planted in late spring & we were delighted to watch them start their initial growth-cycle. They ultimately produc...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
© 2015 Lady Bird Johnson Wildflower Center