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Name: Lynn
Status: student
Grade: N/A
Location: N/A
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Date: N/A


Question:
We've lived in the mountains of CO for 16 years but we have never seen so many pine cones on the ground as we have this year. Several times as many as ever in the past. Do they go through some stage every 20 years or so, or ??? These are Ponderosa pines. Why would there be so many pine cones this year?


Replies:
Very likely a "mast year" for pine cones.
The following may be helpful:

http://www.newton.dep.anl.gov/askasci/bot00/bot00205.htm

Sincerely,

Anthony R. Brach, Ph.D.



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