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Wilding pines are classified as a pest in New Zealand, and Khan Adam and his crew cut down thousands each year.
The trees are being sold for $25 each with the proceeds going to the I Am Hope charity.
Khan Adam said a few of the crew had been playing around with the idea for a while.
'We just thought about all of the little we trees getting cut down year in and year out. The idea of giving the proceeds to charity just worked in really well."Audio: RNZ
Adams said wilding pines can become a huge problem.
"Certain species mature a lot earlier than others and the spread is really bad and up in the high country with the prevailing winds can spread really easily.
"It's definitely an issue to watch out for."
They will also need to be properly disposed of after use to ensure there is no environmental risk.