/r/invasivespecies

Photograph via snooOG

Focused on the very important environmental issue of noxious exotic species from around the world invading, degrading and destroying native ecosystems and costing nations billions.

Our submission content consists of news, educational resources, discussion and photos of field sightings.
The goal of the sub is to better inform and educate our subscribers on the critical topic of invasive species.


An invasive species is an organism not native to a specific location, with a sustained population and which damages the environment, human economy and/or human health

This is an important topic, since many organisms, especially island populations, are threatened or already extinct at the hands of these noxious invaders.


Post flairs

Sighting

For reporting sightings of invasive species. Please include a location and proof!


Management

For questions, discussions and articles on managing invasive species.


News

For full articles on invasive species issues.


Impacts

For posts on the problems invasive species cause.


Law and Policy

For the laws, policies and regulations around invasive species.


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  • /r/invasivespecies

    16,827 Subscribers

    0

    Anybody know what bird this is? Eastern Pennsylvania, some kind of grackle(?) nesting in my walls (sorry for the bad quality but it's the only picture I could get)

    I'm just wondering if anybody here can ID it, if it's an invasive grackle or an endangered one.

    4 Comments
    2024/04/17
    23:15 UTC

    4

    Does clearing ABH infestations help control mosquitoes?

    My theory is that Asian bush honeysuckle (ABH) is a choice habitat for mosquitoes during the day. It creates extremely dense cover which protects them from sunlight and predators. It also blocks wind, which helps mosquitoes since they are weak flyers. Finally, it allows trash to accumulate which provides a place for mosquitoes to lay their eggs. These are just my observations but have there been any studies?

    5 Comments
    2024/04/17
    19:08 UTC

    5

    Best removal tactic for bradford/callery pears?

    There is a large grove of young bradford pear trees by my work and I really want to get them out before they are too big to be removed without machinery! Best way to remove without them coming back?

    I also have some full grown bradfords by my home and would love some tips to prevent further growth/invasion to encourage the city to remove them. they’re very obviously for aesthetics and not function.

    12 Comments
    2024/04/17
    17:16 UTC

    4

    JKW

    I’ve had a couple of stems of JKW each year for the last 5 in my garden. I’ve always painted foliage with glyphosate to the appropriate dilution during flowering. I’ve just found a small shoot about 2-3m from where it has previously been (no regrowth here yet). Is it worth treating this stem now or wait until flowering in August? I’m in UK

    3 Comments
    2024/04/16
    16:20 UTC

    7

    Do iguanas in South Florida actually do much ecological damage?

    They cause erosion by digging their burrows which causes millions of dollars of structural damage, they spread salmonella through their feces, they eat nickerbean which is the host plant of an endangered butterfly, and some snails were found in the stomachs of a few iguanas in one park.

    But none of that seems THAT bad from an ecological perspective. Besides the butterfly, it doesn't seem like they're endangering any species?

    3 Comments
    2024/04/15
    20:09 UTC

    1

    Knotweed or not Knotweed?

    My wife and I have been waging a slash and burn war (without pesticides) for the past few years. This year, we have some plants sprouting up that could be knotweed but don't look like our usual first sprouts. The first two photos (with the big green broadleaf plants) are what has been popping up all over the spot. Can you help identify the plants in the first two pictures? The second two (with the little reddish sprouts) are what we usually see sprouting up around this time of year.

    There are definitely some similarities but it's still different than what we're used to. Naturally, we want to start clipping the knotweed, and will start where we recognize it, but we also want to encourage other plants to grow. Honestly, we'll let just about anything grow as long as it isn't the knotweed. Thoughts and input are appreciated.

    Edit: We are not looking to use pesticides at this time.

    EDIT: Identified as broadleaf dock or bitter dock. How to Remove/Kill Dock Weed Organically || Quick & Easy Guide - YouTube

    This year

    This year

    previous years

    previous years

    7 Comments
    2024/04/15
    15:48 UTC

    7

    Eucalyptus Monocultures

    Im portuguese and these fucking trees are everywhere, I’m considering ways I could wipe them out en masse without harming the rest of the ecosystem, Any eucalyptus diseases or other methods that wouldn’t require spending hours on each tree would be excellent

    In regards to the legality of this I only mean to affect the ones on public land which aren’t the property of someone

    0 Comments
    2024/04/14
    21:43 UTC

    2

    Signal Crayfish Questionnaire UK

    Hello, I am currently studying about Signal Crayfish and there impacts on the UK environment and I need acknowledgeable people who have a passion for Signal Crayfish to participate in my questionnaire. It would be highly appreciated. https://forms.office.com/Pages/ResponsePage.aspx?id=Hg4R8gzHJkuDOc_OaZtztQaQTf5c2G1EpwyfAKSB_c1UQ0FCVTVKSzE3NTlGWEpYSkVDMU84N0FESi4u

    0 Comments
    2024/04/13
    16:19 UTC

    4

    What's the protocol for plants where an invasive has hybridized with a native?

    Just read about Red and white Mulberry do this. I also seem to remember that perhaps native wild grape and porcelain berry maybe do this? Eradicate or no?

    5 Comments
    2024/04/13
    11:22 UTC

    12

    Japanese Knotweed?

    Saw this growing out of neighbor 's backyard and Google reverse image search returns Japanese Knotweed. The stem doesn't look red like pictures i foumd online so can't really tell if it is what I think it is.

    22 Comments
    2024/04/12
    18:45 UTC

    0

    Silent but deadly

    Un burro con nachas se enfrenta up cocodrilo y tu mama tambien

    1 Comment
    2024/04/10
    16:04 UTC

    5

    Is this Knotweed?

    Did a quick Google search on this and not quite sure what it is. Some searches suggested Knotweed amongst other plants. Could anyone help identify this please? I'm in the UK if that helps.

    10 Comments
    2024/04/10
    12:30 UTC

    13

    Lesser Celandine, what can realistically be done about it?

    I'm so tired of this plant. I would love to give some native plants a fighting chance by spreading around native seeds but I'd rather not play god in fear of making the issue worse, or creating an entirely new problem. Talked it over with a couple peeps and the takeaway is that these efforts would be futile, and that we ought to adjust to their presence. Im young naive and in denial because come on there has to be something I can do, right?

    Any ideas?

    18 Comments
    2024/04/09
    23:49 UTC

    6

    Defending our Bird Nest from the Neighbor’s Cats

    An oldie but Goldie. 😂

    2 Comments
    2024/04/09
    18:15 UTC

    19

    Just got back from a road trip from western PA to OH. I saw SO many Bradford pears in wild areas.

    I was appalled at the number I saw. We need a sort of Johnny Appleseed in reverse, who goes around cutting down Bradford pears. If you’ve got one on your property, PLEASE get rid of it.

    8 Comments
    2024/04/09
    15:57 UTC

    3

    caught gecko, not sure what to do

    hey y’all! not sure if this is the right place, but i thought i’d ask anyways. i’m from california, and i saw a mediterranean house gecko outside in my backyard. from my research, it seems like they’re not as big of a pest here as they are in other states, but i’m sure i should probably still do something with it. keeping it is not an option. should i leave it be, or do i need to euthanize it? please let me know!

    2 Comments
    2024/04/09
    03:46 UTC

    4

    Best selective herbicide for Stilt grass in wetland habitat?

    Acclaim can't be used near water, and I want to avoid non-selective herbicides that will kill other plant species. Are there wetland safe herbicides that will leave native grasses intact? Right now I have a big problem with Stilt grass on stream margins and swampy areas where the fluctuating water levels spread the seeds and disturb the soil.

    2 Comments
    2024/04/08
    21:45 UTC

    3

    Help identifying tuber type weed, fast growing, Ohio

    I'm in northeast Ohio, heavy clay soil, urban environment, old house with lots of perennials. This established itself since fall and wasn't visible then. The roots are fat (1/2" or more), white on inside, sometimes whitish, or purplish on outside, and only 1-2 inches down, sometimes less. Spread quick, purple buds that almost look like hosta buds come up just above surface. Grew quick and needed a fork to pull. Seems to like partial sun. Tried to get parts but tough to get all the tubers.

    4 Comments
    2024/04/08
    21:08 UTC

    6

    Worm ID needed: Jumping worms?

    17 Comments
    2024/04/08
    01:51 UTC

    10

    where do you even start with a tree of heaven like this???

    it’s growing through power lines and right on the property line too. seedlings coming up everywhere.

    7 Comments
    2024/04/07
    16:58 UTC

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