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2. List of superlative trees - Wikipedia

   en.wikipedia.org/wiki/List_of_superlative_trees

   Five mostly yellow petals, each up to 9.5 inches (24 centimeters) long by 0.6-inch (1.5 cm) wide, and reflexed. [164] Flower 9 to 10 inches (23 to 25 cm) wide with long stamens bringing the length to nine inches (23 centimeters). Largest of the Baobab flowers. Hibiscus waimeae Malvaceae: Endemic to the island of Kauai, in Hawai'i.

3. Tree girth measurement - Wikipedia

   en.wikipedia.org/wiki/Tree_girth_measurement

   By contrast, the (roughly) 300-year-old Ice Glen pine in Stockbridge, Massachusetts shows approximately half the annual growth rate of trees in the 90- to 180-year age range, averaging just 5.8 cubic feet (0.16 m 3) per year over a five-year monitoring period. Volume increased as a result of increases in both height and girth.

4. Stocking (forestry) - Wikipedia

   en.wikipedia.org/wiki/Stocking_(forestry)

   When stocking, a tree's basal area is measured. The basal area is a cross-sectional area of the stump taken about 4.5 feet (1.4 m) above the ground. [7] The equation for calculating the basal area of trees in a stand is Basal Area = 0.005454 DBH 2, where DBH is the diameter of the tree at the aforementioned measuring height. [7]

5. Tree measurement - Wikipedia

   en.wikipedia.org/wiki/Tree_measurement

   A bigger problem is misidentifying a forward leaning branch for the actual top of the tree. Errors associated with this mistake may yield measurements that are off many tens of feet and some errors of over forty feet and more have made it onto various champion tree lists, and in at least two cases, the errors have exceeded 60 feet. [15] [16]

6. How Long Does It Take a Christmas Tree to Grow? The ... - AOL

   www.aol.com/long-does-christmas-tree-grow...

   According to the National Christmas Tree Association, most Christmas trees need about 7 to 10 years to reach the ideal height for decorating, which is typically around 6 or 7 feet.

7. Stand density index - Wikipedia

   en.wikipedia.org/wiki/Stand_Density_Index

   The above equation is an expression for computing the stand density index from the number of trees per acre and the diameter of the tree of average basal area. Assume that a stand with basal area of 150 square feet (14 m 2) and 400 trees per acre is measured. The dbh of the tree of average basal area D is: