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  2. Pinus strobus - Wikipedia

    en.wikipedia.org/wiki/Pinus_strobus

    Eastern white pine is self-fertile, but seeds produced this way tend to result in weak, stunted, and malformed seedlings. Mature trees are often 200–250 years old, and some live over 400 years. A tree growing near Syracuse, New York , was dated to 458 years old in the late 1980s and trees in Michigan and Wisconsin were dated to roughly 500 ...

  3. Pinus albicaulis - Wikipedia

    en.wikipedia.org/wiki/Pinus_albicaulis

    Pinus albicaulis is the only type of tree on the summit of Pywiack Dome in Yosemite National Park. Pinus albicaulis, known by the common names whitebark pine, white bark pine, white pine, pitch pine, scrub pine, and creeping pine, [4] is a conifer tree native to the mountains of the western United States and Canada, specifically subalpine areas of the Sierra Nevada, Cascade Range, Pacific ...

  4. Propagation of Christmas trees - Wikipedia

    en.wikipedia.org/wiki/Propagation_of_Christmas_Trees

    Viable seeds produced by a mature tree undergo Stratification. [2] This process imitates the period of dormancy that occurs during the winter. [2] In the commercial Christmas Tree nurseries of the northern United States, seeds are sown directly into seed beds in the late fall to allow the seeds to stratify naturally over the winter.

  5. Seed Starting on a Budget Series: Germination - AOL

    www.aol.com/lifestyle/seed-starting-budget...

    Image Credit: 123RF. Not all seeds sprout at the same rate. While environmental conditions may alter germination time (e.g., if the soil is too cold, tomato seeds may take longer to germinate ...

  6. Silviculture - Wikipedia

    en.wikipedia.org/wiki/Silviculture

    In the Chippewa National Forest (Lake States), seed-spot sowing of 10 seeds each of white spruce and white pine under 40-year aspen after different degrees of cutting on gave second-season results clearly indicating the need to remove or disturb the forest floor to obtain germination of seeded white spruce and white pine. [133]

  7. Seedling - Wikipedia

    en.wikipedia.org/wiki/Seedling

    Monocot (left) and dicot (right) Seedling of a Scots pine Grass seedlings (150-minute time lapse) A seedling is a young sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed.

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