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Worst weeds

06/11/2013 in invasive plants

I was talking to a fellow garden blogger today… and he mentioned that a part of getting his nursery certified was getting his cogongrass eradicated.

Cogongrass has been in the news, I see reports on “The Farm Monitor” and “The Ag Journal” on network television… I’d seen the field guide to cogongrass identification but I really didn’t know all that much about it… Went to google…

http://www.cogongrass.org/georgia/ made for interesting reading and viewing…  in watching those videos, I remarked on it’s similarity to Johnson grass…

cogongrass seems to be worse…

Cogongrass has been called one of the world’s ten worst weeds… This seems like a pretty serious claim, and I was curious what other weeds made the list…

Found a list for Mississippi: http://msucares.com/pubs/misc/m1194.pdf

Found this list: http://hannahtomlinson.weebly.com/uploads/1/4/2/1/14215517/10_worst_weeds.pdf

It’s kind of hard to take it seriously though… a list that includes lamb’s quarter and purslane? Lambsquarter is a valuable food item at my house, and purslane could be… and neither is any great shakes as weeds… If you wanted to include annual weeds, chamberbitter (Phyllanthus niruri) and mulberry weed (Fatoua villosa) would make far better candidates…

It seems like a list of the worst weeds should take into account things like rizomes, stolons, and the born pregnant qualities of the 2 above annuals.

A better list would be this list of Georgia invasives

My list?

Glad you asked…

In no particular order,

  1. nutsedge
  2. bermuda grass
  3. Florida betony
  4. johnson grass
  5. chickweed
  6. chamberbitter
  7. mulberry weed
  8. Chinese wisteria
  9. morning glories
  10. better place cogon grass on the list.
  11. Stilt grass (Microstegium vimineum)
  12. wavy leaf basket grass (Oplismenus hirtellus ssp. undulatifolius)
  13. eleagnus
  14. privet
  15. Japanese honeysuckle
  16. dodder
  17. creeping charlie
  18. dichondra
  19. dollar weed (Hydrocotyle sp.)
  20. Houttuynia cordata
  21. duchesnea

With a bit of walking around other people’s gardens, I could easily extend this list to a hundred… bringing it down to 10 probably wouldn’t be as easy.

Do you have a bad weed? I’d like to hear about it.

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5 responses to Worst weeds

  1. Couple of weeds get me really annoyed. Burdock is a problem. Very common, incredibly deep roots which will regrow the plant unless you get the whole things, huge area encompassed by the spreading leaves if allowed to grow, and annoying burrs to work out of your dog’s ears and tail. Upside is that it is really good chicken feed (leaves) and is an edible plant. Thistle, of the variety that is sold as finch feed for bird feeders flat-out hurts to get out of the gardens, and again has a deep root that must be completely removed to eradicate the plant. In the home garden it is creeping charlie that we spend most of our time dealing with, and while not hard to pull, any root or stem part will grow new plants, so no tilling of it, it had to be yanked by hand.

  2. With a farmer next door who allows all his weeds to go to seed which then blow over the fence into the garden. the list is a long one! The worst are bindweed, docks, thistles, buttercup, nettles, brambles, and hairy bittercress. Why can’t the slugs and snails eat them instead of the hostas!

    • stone said on 06/11/2013

      I was out shooting thistle recently and when I researched it, learned that musk thistle is banned in 22 states and several provinces!

      We have those buttercups, bindweed, brambles, docks, nettles, buttercresses as well. The sorrel is supposed to be edible, as well as the bittercress.

      Of your list, I would consider the brambles, bindweed, suitable for inclusion in this list… dig them out, they regenerate!

      Some of those nettles are pretty fun also! We have Cnidoscolus stimulosus which is actually a native plant… We also have horse nettle (another native) which is pretty difficult to get rid of… And That soda apple is supposed to be terrific!

      Maybe you can talk to the slugs… make a deal…

  3. Buttercup is a weed? Grows about 3 feet tall and has pretty yellow blooms? My number 1 and 2 slots for hated, horribly invasive weeds is Florida betony and Dollarweed. Was in Atlanta last month and waved at you as we drove by on I-75.

    • stone said on 11/03/2013

      Yep… buttercup isa weed…
      In my garden, I leave some… Because… I like flwrs… even weedy ones like those poisonous ranunculus…

      As hated and despised as is the Florida betony (Stachys floridana), you might consider adding it to the menu.

      Very useful.

      I’m currently trying to decide on a spot where I can plant a patch…

      Not having any luck growing tubers here… Those stinkin’ voles… My Jerusalem artichokes (Helianthus tuberosus) were sitting in hollows… where those horrible pests cleaned out all of my food…

      The only way I get any tubers is by growing them in pots… I don’t really want to grow rattlesnake weed in a pot…

      Next time yer coming through… Leave me a message on FB messaging, or use my contact page…
      I’ll give you a tour.

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