Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Monday - November 12, 2012
From: Austin, TX
Region: Southwest
Topic: Non-Natives, Pruning, Herbs/Forbs
Title: Care for some non-native salvias from Austin
Answered by: Barbara Medford
QUESTION:
Mexican bush sage and Salvia "indigo spires" are both blooming in my Austin beds right now. Once they stop blooming and/or frost gets them, could you tell me by how much they should be cut back? Right now they are about 4 feet high. Also, my Tropical Sage has stopped blooming -- by how much should it be cut back, and when? I've recently returned to gardening after a 40-year hiatus, so I'm kinda rusty! Thanks for your help.ANSWER:
Welcome back to gardening. Let us introduce you to our Native Plant Database. The Lady Bird Johnson Wildflower Center, home of Mr. Smarty Plants, is dedicated to the growth, protection and propagation of plants native not only to North America but to the area in which those plants grow naturally. Since you are in Austin, you should visit the Wildflower Center to see this in action. We pursue this use of native plants because they are most likely to be able to thrive in the soils, climate and rainfall you are experiencing where you garden.
The first thing we do when we receive a question asking for help on specific plants is to determine if those plants are in our Native Plant Database. We can't say that every plant that is native to North America is in our database, but we can say that if it is there, it is native.
In this case, we can answer your question generically, because your plants are all members of the genus Salvia. Salvias are perennials and should be pruned back in late Fall when they have stopped blooming and the leaves are beginning to dry up. We always prune down to about 6 inches, mostly so we can see where the plant is. They come back from the roots in the early Spring, but if we don't have those cut stems marking the spot, we are liable to think that is an early weed and yank it out.
Just so you will know, only Salvia coccinea (Tropical sage) is native to North America as well as to Travis County. Mexican bush sage (follow the link to a previous Mr. Smarty Plants answer) is native to Mexico and Central America.
Indigo Spires - (Also from a previous question) "Indigo Spires, sometimes called Mystic Spires, is thought to be a hybrid between Salvia farinaceae and S. longispicata. It was found growing at the Huntingdon Botanical Gardens in California in the 1970s. The botanist who discovered and named it noticed that it the new plant was growing near the other two, and theorized that it was an accidental hybrid. Salvia farinacea (mealycup sage) is a Central Texas native, but the S. longispicata is something of a mystery, thought to be native to Mexico. In fact, when we went googling to try to find information about it, it was always in combination with S. farinacea to make Indigo Spires."
From the Image Gallery
More Non-Natives Questions
Problems with non-native nectarine in Gilbertsville PA
November 20, 2009 - I live in southeastern Pennsylvania. I have a mature nectarine tree maybe 14 years old. It has a greenish grey spotting on the trunk and branches, the fruit always turns into the brown mummies and f...
view the full question and answer
Plant identification
November 02, 2011 - I have a plant that I would like to identify. It is a tall shrub/woody vine? (approx. 8-10 feet) that has very large thorns on its branches and stems. The stems remain green during winter. It loses it...
view the full question and answer
Non-native Japanese maple
September 28, 2008 - I have a small Japanese Maple that I planted last fall. I planted it under a huge pecan tree where it gets dappled shade. It has grown very little this spring and summer and the leaves are gray and ...
view the full question and answer
What's invading my bermuda grass?
June 11, 2013 - Our grass is being totally overrun by this weed.(I don't know what the name is identify it by the description. It is in Bermuda grass and the only way to describe the weed is to say it looks like big...
view the full question and answer
Trimming non-native sago from Fresno CA
September 10, 2012 - I have a sago plant, fronds are hanging over into street, can the fronds themselves be trimmed back without removing the whole frond?
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |