Miracle Gro as Tree Killer

Shmuel Silinsky via pbs pbs@lists.pacificbulbsociety.net
Sun, 27 Aug 2023 09:09:31 PDT
My preferred way to kill individual large trees (Ailanthus) is to make a
ring a few inches wide that removes the bark and cambium layer around the
tree. The food to the roots is cut off and the tree is dead, though it may
take a year or more to actually die. Need to check occasionally that any
new growth didn't occur to rejoin the upper and lower.
For smaller trees, broomstick diameter, I sometimes scrape off the cambium.
But sometimes I drill a slanting hole in the trunk (my biggest bit is 1/2
inch) and fill the hole with dry miracle grow. Then I add some water so
there is a high concentrated solution of the nutrient salts. This works
especially well for suckering plants or if I have a lot of trees to kill.
As I said, our primary enemy is Ailanthus and with dry summers I don't want
regular salt around. Hope this helps.
Shmuel
Jerusalem Israel
Zone 9a

On Sat, Aug 26, 2023, 3:20 AM Leigh Blake via pbs <
pbs@lists.pacificbulbsociety.net> wrote:

> ARG!!!  I'm grateful that our native slugs and snails are so
> cooperative!!!  And we love our little RED Snails...too..Our worst
> pests...which i keep yelling about are the California Ground
> Squirrels...and we are missing our native foxes and Coyote.... Back to the
> balance!! Have a wonderful PEACEFUL weekend... Headed down to Kathy Allen's
> wonderful Rock garden tomorrow..  a lot of smoke here...from
> California..and the Flat fire to our west
>
>
> HUGS!!
>
> Leigh.
>
> On Fri, Aug 25, 2023 at 9:05 AM Kathleen Sayce via pbs <
> pbs@lists.pacificbulbsociety.net> wrote:
>
> > As I told Shmuel, my climate is wet (70-110 inches per year, 180-280 cm)
> > so I can get away with a little salt on a slug every now and then. It’s
> not
> > my preferred option, but when 10+ chocolate slugs are eating Kniphofia
> > flowers in broad daylight, it’s quite satisfying. And the kniphofia is
> > fine.
> >
> > Kathleen
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