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The U.S. Department of Agriculture's Pomological Watercolor Collection is an archive of some 7,500 watercolor botanical illustrations created for the USDA between the years 1886 and 1942 by around five dozen artists. [1]
The duties of this office included world-wide plant expeditions, crop testing (to ensure no diseases or invasive pests were introduced), propagation, and distribution. The office oversaw several testing gardens, including the USDA Plant Introduction Garden in Miami Florida [2] and the National Seed Distribution program. [2]
The inflorescence is a cylindrical to oval mass of spikelets up to 6 centimeters long and 1.2 wide ... USDA Plants Profile; Grass Manual Treatment ... on 12 September ...
Plant liners must also have established root systems that touch the outer edges of the container and stay intact when lifted from the container. [2] The U.S. Department of Agriculture's National Plant Materials Manual defines "liner" as plant material which is grown in one location and then “lined-out” in another location for finishing off ...
Gardening books encompass a variety of subjects from garden design, vegetable gardens, perennial gardens, to shade gardens. Every plant genus or category of plants may also be covered including roses, clematis, bulbs, hellebores, and hydrangeas. The Internet has expanded and enhanced the availability of gardening resources.
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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Hackelia virginiana, a biennial plant, is commonly known as beggar's lice, [2] [3] sticktight or stickseed. [3] However, the common names beggar's lice and stick-tight are also used for very different plants, such as Desmodium species that are also known as "tick-trefoil".