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    How to Identify and Avoid Ragweed - The Spruce

    • Ragweed is a plant that many people speak of but might not know for sure what it looks like. It is well known by name because it is the prime source of fall allergies in North America. And it is hard to identify becau… See more

    Varieties

    There are two common varieties of ragweed: common ragweed (Ambrosia artemisiifolia) and giant ragweed (Ambrosia trifida). Together, the two plants account for most of the … See more

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    Morphology

    The leaf of the common ragweed plant is made up of multiple leaflets that have a fern-like appearance. The leaflets are essentially miniature versions of the whole leaf. Such l… See more

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    Appearance

    Another identifying feature on the common ragweed plant appears with its initial leaves, those that first come out after a seed germinates. These typically have some purpl… See more

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    Ragweed - Identify that Plant
    Identify that Plant
    What are the physical requirements of common ragweed?
    Soil physical requirements: Common ragweed tolerates a wide range of soil textures and drainage conditions. It is highly tolerant of extreme soil compaction. Common ragweed tolerates moderate soil salinity by decreasing allocation to root growth relative to shoot growth.
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    Table of Contents
    Varieties
    Morphology
    Appearance
    What are the physical requirements of common ragweed?
     
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