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Krohn Conservatory Bonsai #38 - Ponderosa Pine

Scientific Name:

  • Pinus ponderosa


  • Ponderosa Pine

Type of Tree

This Ponderosa Pine was field collected with permission (yamadori) from Devil’s Tower area of Wyoming at 8-10,000 feet by renowned bosai artist Dan Robinson.  Yamadori literally means collecting plants in the mountains.  For this tree, the process took 3 years.  The first year, a third of the roots were dug up and re-packed.  The second year, another third was dug and repacked.  The third year, the entire tree was extracted.  It was donated in memory of John Carroll in 2002.  It was styled by Mauro Stemberger, Italian Bonsai Master, on November 15, 2015. 

It is an informal upright style.  The pot is large, rectangular, unglazed, brown in color and is 10 inches deep.

They grow from British Columbia southward and eastward through 16 western U.S. states and have been successfully introduced in temperate regions of Europe, and New Zealand.

Germination Year
1640 (Age: 383 years)
In Training Since
1988 (35 years)
Acquired in
Insect Control

These trees can be susceptible to red spider mites, needle cast, scale, and white fly. Treat with insecticide (malathion). For needle cast, use fungicide (daconil).