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Top Questions About Hypericum Plants

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Questions About Hypericum Plants

  • Answered by
    rvmirfield on
    July 22, 2014
    A.

    Thank you for your help. I hadn't realized just what a potential future problem when enjoying it's flowering period. It's a hidden time bomb waiting to explode. Have now treated all the roots that are rapidly appearing with "Roundup weedkiller gel" . (Glyphosate 7.2g/l).

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  • Answered by
    theficuswrangler on
    July 20, 2014
    A.

    Here are some suggestions: https://www.gardeningknowhow.com/edible/herbs/st-johns-wort/controlling-st-johns-wort.htm

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  • Answered by
    kossykane on
    May 10, 2018
    A.

    Thanks- it was early March so I do believe it was dormant. Should it be budding by now? There are slight bumps on the stems but no buds...

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  • Answered by
    MichiganDot on
    May 10, 2018
    A.

    Was the plant dormant when you "stooled" it? If it had already leafed out when you pruned it, then yes, you may have killed it. Go ahead and cut the fattest branches down as far as you can to get more light into the center. Cut back one of the smaller branches. If the inside or pith is tan, it is gone. If there is a thin green ring just under the bark, it's alive.

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  • Answered by
    Downtoearthdigs on
    September 21, 2018
    A.

    These are best transplanted in spring. Here is a link to some very useful articles on your plants: https://www.gardeningknowhow.com/edible/herbs/st-johns-wort/

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  • Answered by
    BushDoctor on
    June 29, 2022
    Certified Expert
    A.

    Since there may be quite a few restrictions on what methods you are permitted to use in your area, I would opt for a treatment that is without chemical means. Solarizing soil can be a very good way to do so.

    https://www.gardeningknowhow.com/garden-how-to/projects/how-to-solarize-garden-beds-to-eliminate-garden-pests-in-the-soil.htm

    https://www.gardeningknowhow.com/edible/herbs/st-johns-wort/controlling-st-johns-wort.htm

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