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Top Questions About USDA Zones

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Questions About USDA Zones

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  • Answered by
    MichiganDot on
    September 18, 2018
    A.

    A range of 2-7 implies that a zone warmer than 7 may be too warm in winter for the plant to thrive. The second number, as in 2-7, indicates that the plant needs cold-induced dormancy to trigger spring growth and blooms. So, if grown in zone 8, it may not flower. To double check, search the internet for the plant's heat zone. Confusing!
    http://ahsgardening.org/gardening-resources/gardening-maps/heat-zone-map
    https://www.gardeningknowhow.com/...zone/zone.../zone-8-sun-tolerant- plants.htm

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  • Answered by
    MichiganDot on
    September 23, 2018
    A.

    Here is a website from looking up your agricultural zone. https://planthardiness.ars.usda.gov/PHZMWeb/
    Also search from your state's Extension Service. You'll find planting calendars for your location and a wealth of information on what grows well in your area.

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  • Answered by
    drtreelove on
    September 30, 2018
  • Answered by
    MichiganDot on
    November 10, 2018
    A.

    Dallas is in hardiness zone 8a. Before picking flowers, watch the sun and see how many hours per day that the area gets. The winter sun is lower and the exposure may be less than in summer. Here is a link to a good resource for growing flowers in your area. http://www.ccmgatx.org/gardening-resources/plants-for-collin-county/perennials-annuals.aspx

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  • Answered by
    MichiganDot on
    December 2, 2018
    A.

    Lodi California is in hardiness zone 9b. There are now Heat zone maps that help gardeners know what areas are too hot to grow some plants. You can find more info about zones at http://www.ahsgardening.org/gardening-resources/gardening-maps

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  • Answered by
    MichiganDot on
    March 1, 2019
    A.

    Explore the gardening section of Michigan's Cooperative Extension Service, run by MSU. Here is the homepage: https://www.canr.msu.edu/home_gardening/
    The frost-free date is found here: https://www.canr.msu.edu/news/when_can_i_plant_check_your_areas_frost_free_date
    The start date to the gardening season depends on what you are growing. Some flowers like pansies can take frost. So call the "cool season" vegetables like peas, beets, and lettuces and these can often be planted soon after St. Patrick's Day depending on weather. If winter hangs on and soil is wet and cold wait another week or two. Plants like annual flowers, tomatoes, cukes and corn- some of the "warm season" vegetables, don't get put out until the soil has warmed to 60 degrees. Putting them out sooner will set them back, if not kill them. That is often approximately the first week in June. Frost returns in October, mid October for me in SE Michigan. I hope you find the extension service website helpful. There is an office in your county where you can pick up brochures or talk to a Master Gardener.

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