What's your question? Ask

Top Questions About Gooseneck Loosestrife

Click on links below to jump to that question.

Questions About Gooseneck Loosestrife

  • Answered by
    Heather on
    June 18, 2011
    Certified Expert
    A.

    Yes, it is known for that. Any small pieces of the root will result in this plant coming back.

    Persistence is the key with getting rid of it. Dig it up as best you can and then treat the area with boiling water. Please note that boiling water will kill any plant that it comes in contact with, so don't get any on any plants you would like to keep.

    After this, keep a sharp eye out for any stray sprouts and pull these as soon as you spot them.

    If it is an area you don't mind fallow for a bit, you can also smother the plants with thick layers of newspaper or cardboard.

    Was this answer useful?
    00
Join Us - Sign up to get all the latest gardening tips!
  • Answered by
    JeffreyGardener on
    April 18, 2016
    A.

    Go the the garden store and get an herbicide that has the chemical, glyphosate, in it (such as 'Roundup'). I've found it cheaper to buy the glyphosate as a concentrate so that I can mix a lot of it at home in my two-gallon hand sprayer. Pick a warm, windless, and rain-free day and very carefully but thoroughly spray the gooseneck loosestrife with the glyphosate. Be very careful not to spray any plants that you want to keep. Glyphosate will kill just about any plant it touches if enough of it gets on them. However, with gooseneck loosestrife, you may have to make several applications throughout the growing season. Wait at least a week before applying glyphosate again if you didn't get all of it the first time.

    Was this answer useful?
    00
  • Answered by
    Downtoearthdigs on
    April 18, 2016
    A.

    You will need to use a Glyphosate herbicide to kill Loosestrife.
    It is however, non-selective and will kill other plants that it touches.
    Careful application of the herbicide is very important to protect your other plants.

    https://extension.psu.edu/natural-resources/water/news/2013/gooseneck-loosestrife-an-arch-beauty-quick-to-escape
    https://www.gardeningknowhow.com/ornamental/flowers/gooseneck-loosestrife/gooseneck-loosestrife-flowers.htm

    Was this answer useful?
    00
  • Answered by
    Alisma on
    November 9, 2016
    Certified Expert
    A.

    You can certainly dig up a clump of the plant and place it in a container with potting soil. Yes, it does spread a lot. It is considered to have an invasive root system and may be banned in certain areas:

    https://www.gardeningknowhow.com/ornamental/flowers/gooseneck-loosestrife/gooseneck-loosestrife-flowers.htm
    http://www.uaex.edu/yard-garden/resource-library/plant-week/gooseneck-loosestrife-7-2-09.aspx

    Was this answer useful?
    00
  • Answered by
    Downtoearthdigs on
    June 21, 2017
    A.

    Yes, in some regions it can become invasive or aggressive.
    Glyphosate herbicides are very effective for killing loosestrife. Glyphosate is available under the trade name Roundup. Glyphosate is nonselective; however, selective application techniques allow it to be used effectively with minimum damage to desirable plants. It is taken up through the leaves or young stems and will kill any plant that it is applied to. Therefore, treat only the loosestrife plants and avoid contact with valuable plants.
    https://www.gardeningknowhow.com/ornamental/flowers/gooseneck-loosestrife/gooseneck-loosestrife-flowers.htm

    Was this answer useful?
    00
  • Answered by
    BushDoctor on
    June 4, 2018
    Certified Expert
    A.

    You won't be able to make the blooms last longer, as this is controlled by the plant's genetics. You can trim them off once they are spent, to improve the look of the plants.

    This article will help with the care of these: https://www.gardeningknowhow.com/ornamental/flowers/gooseneck-loosestrife/gooseneck-loosestrife-flowers.htm

    Was this answer useful?
    00
  • Answered by
    Downtoearthdigs on
    June 6, 2018
  • Answered by
    BushDoctor on
    July 8, 2020
    Certified Expert
    A.

    It is very hard to say without close, and detailed photos of the leaves and flowers, but it may be
    Lysimachia punctata.

    This page from the North Carolina Extension will offer information so you can compare:

    https://plants.ces.ncsu.edu/plants/lysimachia-punctata/

    Was this answer useful?
    00

Do you know a lot about gardening?
Become a GKH Gardening Expert

OK