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  2. Paulownia tomentosa - Wikipedia

    en.wikipedia.org/wiki/Paulownia_tomentosa

    Pollarded trees do not produce flowers, as these form only on mature wood. Paulownia tomentosa requires full sun for proper growth. [15] [16] It is tolerant of pollution and can tolerate many soil types. It can also grow from small cracks in pavements and walls. Paulownia can survive wildfires because the roots can regenerate new, very fast ...

  3. Paulownia fortunei - Wikipedia

    en.wikipedia.org/wiki/Paulownia_fortunei

    Paulownia fortunei commonly called the dragontree, dragon tree or Fortune's empress tree, is a deciduous tree in the family Paulowniaceae, native to southeastern China (including Taiwan), Laos and Vietnam. It is an extremely fast-growing tree, due to its use of C 4 carbon fixation, [3] and is planted for timber

  4. Empress tree - Wikipedia

    en.wikipedia.org/?title=Empress_tree&redirect=no

    This page was last edited on 16 September 2015, at 04:12 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  5. Hardiness zone - Wikipedia

    en.wikipedia.org/wiki/Hardiness_zone

    For practical purposes, Canada has adopted the American hardiness zone classification system. The 1990 version of the USDA Plant Hardiness Zone Map included Canada and Mexico, but they were removed with the 2012 update to focus on the United States and Puerto Rico. [8] The Canadian government publishes both Canadian and USDA-style zone maps. [37]

  6. 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]

  7. Disocactus phyllanthoides - Wikipedia

    en.wikipedia.org/wiki/Disocactus_phyllanthoides

    Disocactus phyllanthoides, the nopalxochitl or German empress, is a species of flowering plant in the cactus family Cactaceae. It is commonly grown as an ornamental houseplant. It is one of the three major species involved in creating the widely grown epiphyllum hybrids or "epis". The others are Disocactus speciosus and Disocactus crenatus.

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