This will require a lot of patience. These can take months to germinate. I would leave them on, but I don't think it would harm them to take them off. Just whatever is easier for you. This article will guide you through the process of this: https://www.gardeningknowhow.com/ornamental/trees/pine/how-to-grow-a-pine-tree-from-seed.htm
Answered on February 11, 2019
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