Junk In Junk Out Nursery Selection to Avoid
















































- Slides: 48

Junk In = Junk Out: Nursery Selection to Avoid Risk & Problem Trees Vince Urbina

Junk In = Junk Out: A True Story The Charlie Brown Tree

Where it starts!

Container Size #5 #7 #15 #20 ANSI Z 60. 1 -2004: lists cubic inch volume ranges for all containers

Lightly Branched Container Liner • Bud grafted cultivar on root stock • NOTE: supplier maintained a strong central leader • Supplier ships dormant tree in early spring and it is placed in cold storage • Root pruned in the cold storage cellar to fit into appropriate container • Broken branches are removed • Restore central leader if needed • Potted in April • Maintained in container for one complete growing season. • Sold the following year as a container-grown tree.

Container Trees Note: bud graft location on these #20 tree pots.

Whip - Liner

Establish central leader as needed


Rooted Cottonwood Cutting – Field liner Year Two • Year 1 Spring – Plant a 3 - 5 foot rooted liner with no branches • Year two (Early Spring) – Central leader is identified and or created • Year two (ES) – Identify the lowest scaffold branch that will remain on the tree • Year two (ES) – Identify the spot the trunk which is exactly half the total height of the tree and remove all the lower branches. • Year two (ES) – Identify the lowest scaffold branches and stub remaining branches to force caliper growth • Year two (Summer) – Ensure that central leader remains and make sure there are no problem branches.

Rooted Cottonwood Cutting – Summer Year Two • Year two (S) – Tree needs strong central leader. No branches with included bark. • Year two (S) - Buds break on stubbed branches and produce more branches with lots of leaves • New leaves coming from these stubbed branches produce food that creates trunk caliper. • Caliper = $$$ • Remove stubbed branches in early August to facilitate wound closure • Sell as two year old 1. 5” to 1. 75” B&B with first branch at 4 feet in year 3.

Field Pruning – Honeylocust First Summer’s Growth – Whip Liner Second Summer’s Growth

Chinkapin oak

Tree Source

The Tree Source

The Tree Source

The Big Box Store

Nursery Stock - Examples

Included bark at the tree source….

V Images source: Ed Gilman U Bark that is squeezed between two stems – Bark on Bark

Multiple Leaders gives you….

Excessive branching….

Deborah maple

Codominat Trunks 1/2

Seedlings make up about 30% of the nursery stock in Colorado

Establish a Leader in Spruce Choose the Straightest and the Strongest for the leader

This multiple-leader problem could lead to. ….

What do you see? • Included bark • Possible crack • Weak attachment • Multiple targets • Increased RISK This!

And This!!!

At the tree source look for a dominant central leader. Pines: Austrian, bristlecone, limber, ponderosa, Scotch Spruces: Colorado blue, Engelmann, black hills At the source look for a dominant central leader in: ponderosa, scotch, Limber, southwestern, bristlecone, lodgepole and Austrian pines

Avoid Trees with Large Girdling Roots!!!

Risk Created by People

Downtown Street Planting of Ornamental Pears

• Growing space too narrow • Selected wrong pear cultivar • Multiple high value targets See any problems?


Needs one pruning cut, where?

Some are Working

Remember the 3 R’s

Right Tree

• Poor Site • Clorosis in midsummer • Losing leaves in late summer • Now showing decay evidence • Increased Risk!

Right Place


Right Reason What happened? • Overplanted the site for quick impact • Trees out grew the site • Knee-jerk prune job • Result increased RISK!

Junk IN = Junk OUT

One Man’s Junk is Another Man’s Treasure Not with Trees!!!

Summary • Junk In = Junk Out: ALWAYS • Buy trees from an knowledgeable grower and avoid future problems • IDENTIFY and CORRECT structural issues early in a tree’s life • Remember the 3 R’s

www. urbantree. org

Thank you for inviting me! Contact: vince. urbina@colostate. edu 970 -250 -1923
Nursery bed definition
Figurative language in one thing by one direction
Multiway selection
K selection r selection
Clumped dispersion
Mass selection
Natural selection vs artificial selection
Natural selection vs artificial selection
Balancing selection vs stabilizing selection
Artificial selection vs natural selection
Two way selection and multiway selection
Artificial selection vs natural selection
Directional selection example
Find out the odd one out
Out out robert frost
Matthew 11:28 message
Makna out of sight out of mind
Lock out tag out safety talk
Lock ouy
Put out the light then put out the light
Log out tag out deutsch
Out out frost
Out, damned spot! out, i say!
Out of sight out of mind quote
Out, out— robert frost
Time
Role play on healthy food and junk food
Junk food vs healthy food project
Conclusion of healthy food and junk food
Red flags of junk science
Space junk the space age began
Don would always open the mail throw away the junk mail and
Of junk food
Red flags of junk science
Sampan trade
Expected capital gains yield formula
Conclusion of junk food
Junk food science
Proyecto educativo
Junk shuttle
Food writing sample
Junk bond ratings
Healthy junk restaurant
Riddle
Junk drawer robotics
Junk drawer kingdom
Parallax error meniscus
Security through obscurity examples
Rule of thirds