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… The University of Maryland Plant Diagnostic Laboratory **SPECIAL NOTICE** The UMD Plant Diagnostic Lab is now open to receive samples shipped … on microscopic examination of the specimen and visual identification or culture of plant pathogens such as fungi, …

… sites. However, autumn olive is now considered an invasive plant species for a variety of reasons. While it is not illegal to sell the plant in every jurisdiction where it exists, many natural … was first introduced to the United States as an ornamental plant in the 1830s. It is also called Elaeagnus, Oleaster, or …

… on Musk Thistle ( Carduus nutans ) for this issue. The plant is also known as “nodding thistle,” due to the size of … seed production (up to 120,000 straw-colored seeds per plant) and can crowd out native species. It requires mostly … production and by the wind. The number of seedheads per plant will vary by location, with a single plant able to …

… State University, Bugwood.org What is NOT poison ivy This plant has three leaflets at the tip but an opposite branch …

… of Agriculture (MDA) has named this a  Tier 2 invasive plant . This classification means retail stores that offer this plant for sale must display a required sign indicating that … Ramsey & Wallace Kaufman. 2007. Invasive Plants: Guide to Identification and the Impacts and Control of Common North …

… production including site selection and preparation, plant selection, blueberry growth and development, … They are now retired. Saltveit is with the Department of Plant Sciences, University of California, Davis, CA. … vegetable, and ornamental crops. You will find a photo identification guide and recommendations for how to control …

… This year, the goals of this study were to understand plant spacing’s effect on yield of graphed watermelons where … on June 9th. Rows were spaced at 7 ft between centers. The plant spacing treatments within rows were 3 ft, 5 ft and 7 … Stongback rootstocks and were spaced every third seedless plant throughout the field. Fruit was harvested from each …

… butterfly caterpillars can use butterfly bush as a host plant food source. Without host plants for caterpillars, … Mehrhoff, University of Connecticut, Bugwood.org What to plant instead:   New York Ironweed  (Vernonia noveboracensis) … Ramsey & Wallace Kaufman. 2007. Invasive Plants: Guide to Identification and the Impacts and Control of Common North …

… Ability to produce a lot of seed- >200,000 per female plant. Seed will germinate throughout the season from … canopy. The cover crop needs to reach critical biomass. Plant early, manage like a regular crop, and terminate as … before Palmer really gets going. Use narrow rows and heavy plant populations to encourage earlier canopy closure. Once …