Pine cones are made of scales that naturally open and close in response to moisture in the air. When the air is dry, the ...
The Minnesota Department of Natural Resources is purchasing black spruce pine cones at a rate of $200 per bushel and jack pine cones for $60 per bushel. "The DNR's seed shelves are bare, and over the ...
The numbers of female strobili attacked by the slash pine flower thrips ... of Laspeyresia larvae per cone, did not vary significantly between levels or among quadrants. The proportion of full, empty, ...
Figure caption, Calum and Neil are paid to retrieve pine-cones They must collect pine-cone seed, so that when the forest is cut down for the war effort, the trees can be replanted. Times are hard ...