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

Friday - July 04, 2008

From: Westminster, CO
Region: Rocky Mountain
Topic: Trees
Title: Columnar evergreen for Colorado
Answered by: Nan Hampton

QUESTION:

I am looking for an evergreen 6-8 (or more) feet tall, very columnar; 3 feet spread in diameter, zone 5, full sun, dark green, clayish-OK soil. Thank you so much!

ANSWER:

Here are some suggestions for conical evergreens that are native to Colorado:

Abies concolor (white fir or Colorado fir) is "symetrically conical in yourh", but becomes more irregular as it grows taller. It's maximum height can be as much as 100 feet but is, in general, slow-growing. it doesn't do well in heavy clay soils, but adapts well to other soils. There are various dwarf and other cultivars.

Juniperus scopulorum (Rocky Mountain juniper) is described as being "columnar to somewhat rounded" and its maximu height is 30-40 feet with a spread of 3-15 feet. There are cultivars (e.g., 'Blue Trail','Gray Gleam', 'Medora', 'Pathfinder', 'Skyrocket') that have a more columnar growth.

Picea pungens (blue spruce) is "naturally conical in shape...grows from 50-100 ft, but it is usually shorter in cultivation." There are several cultivars.

Pseudotsuga menziesii (Douglas-fir) is columnar or conical. It "grows from 15-150 ft. tall depending on the environment." There are various cultivars.

You can see more native Colorado trees by doing a Combination Search in our Native Plant Database and selecting 'Colorado' from Select State or Province and 'Tree' from Habit (general appearance). There are other characteristics, as well, that you can use to narrow your search.


Abies concolor

Juniperus scopulorum

Picea pungens

Pseudotsuga menziesii

 

 

More Trees Questions

Soapberry tree problems in North Richland Hills, TX
September 01, 2010 - We have a small grove of soapberry trees. The city recently reconstructed the street and added a side walk which now sets as close at 1 foot from the nearest tree. Everything seemed fine until they ...
view the full question and answer

Having a problem with my Mexican Plum in Houston, TX.
July 05, 2011 - I am having problems with the Mexican Plum Tree in my backyard, sap is oozing from the branches and several large branches have died. I am inclined to think that it I have infestation of borers? How ...
view the full question and answer

Brown circular ring in trimmed branches of redbud tree
January 22, 2009 - I have a redbud tree that was recently trimed back. When looking at the cross section of the branches, I noticed a brown circular ring. Is this a problem and if so what can I do to correct it?
view the full question and answer

Looking for a tree to plant as a memorial in Leesburg, GA.
September 09, 2010 - I'm looking for tree to plant as memorial to my brother who died. It must be native, for South Georgia, zone 8, open fields. It should provide mast for wildlife. Heat zone 8, good drought-tolerance. ...
view the full question and answer

Oak sprouts in flower bed in Colleyville TX
April 04, 2011 - We have a raised flower bed in our back yard that includes 2 live oak trees. We have a TON of shoots that keep popping up and make our bed look very untidy. My husband doesn't think the shoots are ...
view the full question and answer

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