I finally heard back from an expert in conifer cones.

Jan 06, Brown Needles. Pine trees should maintain their distinct green color throughout the year. Early Needle Drop. Normally, pine trees will shed their needles in the late summer to early fall.

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Apr 28, In pines, and in many other cone bearing plants, it may take several years for the seed to mature following pollination. At the time of seed maturation the cone scales open and the seeds are dispersed by wind.

It is also worth noting that in some cone-bearing plants, that maturation of the seed is not sufficient to trigger opening of the cone shrubcleanup.barted Reading Time: 3 mins. Mature trees have dark gray to brown bark that is fissured, showing ridges and deep indents. Cones: White pine are monoecious, meaning each tree can produce male and female cones.

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This occurs in the spring, typically between May and June. Male cones have. Oct 01, Deltredici says the pine cones falling from the trees now, actually started forming three years ago, so our winter weather isn’t to blame for the bumper crop.

He says scientists believe it probably has to do with the insect shrubcleanup.barted Reading Time: 2 mins. May 25, This happens on a sort of cyclical basis. And possibly, out of that abundance of cones, it's just dropping some. Or perhaps an animal (bird or squirrel) is cutting cutting tree in public squar of the cones off.

It's also possible that the tree has put out a flush of stress cones. This happens when the tree is dying and it makes a final effort to reproduce.