Japanese knotweed

Thank you! Very helpful.

Guest User | 6 years and 3 months ago

2

Please log in, in order to post replies!

2 replies

Newest Oldest

Guest User | 6 years and 3 months ago

string(1) "3"
string(6) "200373"

My husband and I looked at a potential investment property in Fort Greene this morning. When we went out to look at the big, tri-level back garden,
I discovered Japanese knotweed growing all over the back and sides of the garden. I’m a volunteer gardener in Central Park and know what a horror
this incredibly invasive plant can be. I don’t want to continue to consider this property before knowing whether landscapers in brownstone
Brooklyn have had success removing and controlling this weed. Any input would be much appreciated!

kevrob | 6 years and 3 months ago

string(1) "1"
object(WP_User)#4928 (8) {
  ["data"]=>
  object(stdClass)#4930 (12) {
    ["ID"]=>
    string(6) "191903"
    ["user_login"]=>
    string(6) "kevrob"
    ["user_pass"]=>
    string(34) "$P$BZ8EufCpWGVUVZ08/keQNKfoKQqPmH1"
    ["user_nicename"]=>
    string(6) "kevrob"
    ["user_email"]=>
    string(23) "kevrob1984203@gmail.com"
    ["user_url"]=>
    string(0) ""
    ["user_registered"]=>
    string(19) "2024-02-22 17:18:41"
    ["user_activation_key"]=>
    string(0) ""
    ["user_status"]=>
    string(1) "0"
    ["display_name"]=>
    string(61) "Your first name Your last name Your first name Your last name"
    ["spam"]=>
    string(1) "0"
    ["deleted"]=>
    string(1) "0"
  }
  ["ID"]=>
  int(191903)
  ["caps"]=>
  array(1) {
    ["subscriber"]=>
    bool(true)
  }
  ["cap_key"]=>
  string(15) "wp_capabilities"
  ["roles"]=>
  array(1) {
    [0]=>
    string(10) "subscriber"
  }
  ["allcaps"]=>
  array(3) {
    ["read"]=>
    bool(true)
    ["level_0"]=>
    bool(true)
    ["subscriber"]=>
    bool(true)
  }
  ["filter"]=>
  NULL
  ["site_id":"WP_User":private]=>
  int(1)
}

I’ve dealt with this before and posted on here about it. In my experience, it’s doable, but labor intensive and requires a several-year plan—you won’t clear it all in a single season unless you basically clear the soil and haul it out.

But I’ve had success with the following approach:
-cut all stalks down just above the first “knuckle” then either pour roundup into the inner “cup” or inject it with something like a barbecue syringe.

-dig up particularly dense clumps.

-walk your property every other day
and pull fresh shoots.

-bag everything you cut or pull immediately—most any part of the plant can regrow.

-your chances of success are MUCH greater if it is truly confined to your property or your neighbors are doing the same—it can grow underground 30+ feet before popping up. in my case, it was the neighbors property that was infested, so i did us both a favor and jumped the fence to clear it. three years in, and it’s still a problem on his side but manage able on mine. i don’t think about it much anymore—it’s just become part of the garden maintenance. but that first year—ugh, it was like a part time job.