Explore Plants

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
    
 

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
2 ratings

Saturday - May 30, 2009

From: Denver, CO
Region: Rocky Mountain
Topic: Trees
Title: Austrian pine in landscape in Denver CO?
Answered by: Barbara Medford

QUESTION:

I'm relandscaping my yard and want to use all or mostly native plants, as I want to create a wildlife. My landscape designer has indicated she wants me to use Austrian Pine in as a specimen tree in the front yard, but I'd like to substitute a native. I'm thinking Mountain Mahogany. Would that be a good substitution? I have a small yard in the front,and need an evergreen that will not get huge. If I do use the Austrian Pine, will the insects and birds be able to use it? Finally, I live in the city near a freeway, it's very urban.

ANSWER:

Pinus nigra, Austrian pine, in native to (among other countries) Austria and Switzerland, and therefore is out of our range of expertise. At the Lady Bird Johnson Wildflower Center we are dedicated to the care and propagation of plants native not only to North America but to the area in which they are being grown. What was your landscaper's reason for recommending that particular tree? When we looked at the USDA Plant Profile for the Austrian pine, it was not even shown as growing in Colorado or, indeed, anywhere close to it. It grows mostly in the Northeastern United States and in Eastern and Western Canada. It is hardy in USDA Hardiness Zones 4 to 7, and Denver is apparently between Zone 4b (average annual minimum temperatures of -25 to -20 deg. F) to 5b (-20 to -10), so it could survive on that account. It can apparently be subject to some insect and disease damage, and we would be concerned that something against which that particular tree had no defenses would attack it. We also learned that it grows to 60 ft. and a 20 to 40 ft. spread. That doesn't sound much like a tree for a small yard, does it? Pictures of Austrian Pine.

Obviously, we would prefer you use a tree native to Colorado, and since you mentioned Mountain Mahogany, we checked on that. There are three native to Colorado, but only one, Cercocarpus montanus (alderleaf mountain mahogany), is shown on the USDA Plant Profile as growing in the Denver area. It is  8 to 12 ft. tall, low water use, sun, larval host to Mahogany Hairstreak butterfly, also cover and nesting site for birds.

Since you were interested in the genus Pinus, the Austrian pine, we looked at some members of that genus native to the Denver area:

Pinus contorta (lodgepole pine) - grows quickly to 20 ft., may reach 30 ft. at maturity, medium water use,sun. Larval host for Western Pine Elfin Butterfly. USDA Plant Profile More Pictures

Pinus edulis (twoneedle pinyon) - 10 to 30 ft., low water use, part shade,  USDA Plant Profile

Pinus flexilis (limber pine) - 30 to 60 ft., low water use, sun, part shade, USDA Plant Profile  More Pictures

If you are really interested in maintaining a native habitat, hopefully you can find a tree among these selections that will work for you.

 

 


 

 

More Trees Questions

Trees native to Anza Valley California
February 14, 2012 - What are the best trees to plant in Aguanga, California?
view the full question and answer

Live Oaks and Foundations
September 22, 2009 - I have a young live oak (18 inch trunk at it's base) growing within four feet of my house. What kind of damage can it cause my foundation? Need your help!
view the full question and answer

Treating cuts in tree trunks
November 21, 2009 - We have two young trees that deer made bad cuts in the trunks. What can we put on cuts to keep bugs and disease from getting in them.? Thank you.
view the full question and answer

Newly planted nuttall oaks from Houston TX
November 16, 2012 - I recently purchased two Nuttall Oak Trees in Houston Texas (October). They are both 15' or taller. I planted them within 24 hours of being delivered, watered them in, staked them, and within 3-4 d...
view the full question and answer

Soils for Acacia greggii and Bauhinia lunarioides
May 02, 2007 - What kind of soil do you recommend for anacacia tree? I was stunned by the one blooming at Center. I have had one for years and it has not been happy. I figure it must be the soil.
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.