= Water twice per month or less, once established.
= Water about once per week, once established.
= Water about twice per week, once established.
= Water three days per week, or more.
Use the plant water needs as a guideline. Actual plant water needs will vary for several reasons, including weather conditions, soil type, sun exposure, root depth, wind and elevation. Adjust your watering schedule as needed to meet the plants' needs at your site. Water recent transplants more often than established plants.
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Pinus aristata
low
NA
NA
20 to 30 ft.
15 to 20 ft.
Yes
Arizona, Nevada, New Mexico, Colorado
sun
USDA zones 2-7
hardy to 11,000 ft.
Bristlecone pine is a bushy, irregularly-shaped native evergreen tree. It has long, dark green needles that cover much of the branches. It produces interesting white resin specks on the needles. The needles and branches are quite dense, and its overall shape varies from conical to very irregular.
Good soil drainage is essential, making bristlecone pine a good choice for hot, dry exposed sites. It is not a good choice for planting in a regularly-watered lawn.
A long-lived tree, some bristlecone pines in nature are around 4,000 years old.
At the Xeriscape Demonstration Garden, the bristlecone pine has grown into a stately specimen tree. When watered periodically in the landscape setting, they grow much larger than they do in nature. It has had no insect, disease, or any other pest problems.
None usually required under normal conditions. Selective pruning may be needed to shape the tree over time.
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