SWfloirda
Chumono
Another vote for Oxalis, also green shrimp plant Ruellia blechum.
What are your pesky bonsai weeds?
- Thread starter Wires_Guy_wires
- Start date
PaulH
Omono
Full strength per mixing instructions.
Vincent Tanner
Shohin
Irish Moss for me. 
I pluck it with tweezers until there’s nothing left… but then it’s back!
I pluck it with tweezers until there’s nothing left… but then it’s back!Wires_Guy_wires
Imperial Masterpiece
How it feels sometimes
Shibui
Imperial Masterpiece
I now have oxalis and Irish moss pretty well under control in the pots. I use full strength, undiluted glyphosate. Wipe it on the leaves of weeds with a paintbrush whenever you see them. Need to be diligent for a couple of years to catch any germinating from seed in the soil but it can be done.
Shamino
Yamadori
I have an awful problem with Oxalis...but it only affects my tropicals and not my Junipers (which, in summer, are close together). Anyone have a reason for that? Maybe that my Junipers are in an unheated garage in Maine during winter and the cold kills the Oxalis???
Wires_Guy_wires
Imperial Masterpiece
My junipers have less oxalis, but it's not absent.
I think oxalis might be inhibited somewhat by the presence of juniper roots.
Maybe junipers send out some volatile compound that oxalis doesn't like. Or simply the fact that junipers colonize a pot quite fast and leave very little room for any weeds.
Interesting observation though! Worth looking in to!
Paradox
Marine Bonsologist
The Irish moss on the gravel, I just remove manually.
Its the moss on the trunks that is the bigger problem
Vinegar kills Irish Moss
I've brushed pure vinegar on the moss with a hobby paint brush and at times sprayed a 50% mixture directly on the tree with no ill effects
I should die and fall off on its own but I usually pick it off with tweezers if I want it gone faster
Its the moss on the trunks that is the bigger problem
Vinegar kills Irish Moss
I've brushed pure vinegar on the moss with a hobby paint brush and at times sprayed a 50% mixture directly on the tree with no ill effects
I should die and fall off on its own but I usually pick it off with tweezers if I want it gone faster
Shibui
Imperial Masterpiece
Does Trident maple qualify as a weed? I have to pull hundreds of trident seedlings out of the pots. Certainly more than any other real weed now that the oxalis is under control.
Tridents are also weeds in the garden beds.
Despite selling around 10,000 trident seedlings each year we seem to hardly make a dent in the numbers and each spring there are more.
Tridents are also weeds in the garden beds.
Despite selling around 10,000 trident seedlings each year we seem to hardly make a dent in the numbers and each spring there are more.
19Mateo83
Masterpiece
It’s the winged elm seedlings that drive me crazy every year. I don’t expect them to be as bad this year since two big ones had to be removed last year.
Wires_Guy_wires
Imperial Masterpiece
They're not bad, but they compete with your bonsai.
They also catch harmful worms in their roots.
Gabler
Masterpiece
That sounds like a good thing.
The Barber
Chumono
Not all worms are created equal. Not sure what worm he's speaking of, but I'm assuming some sort of parasitic worm.
PA_Penjing
Chumono
I stay on top of weeds so that’s at least one thing that doesn’t plague me. But I refuse to buy anything with Irish moss in the pot, not worth it spreading to my yard
Gabler
Masterpiece
Yeah. If it's a parasitic worm, wouldn't it be good for the oxalis to catch it? That sounds like a reason to promote oxalis growth.
PaulH
Omono
Oxalis is a vector for the spread of root nematodes.
Wires_Guy_wires
Imperial Masterpiece
I've heard they're not just vectors but also have pores and loops in their root system in which some nematodes get stuck and digested.
That information is anecdotal though.
just.wing.it
Deadwood Head
Mostly Acer Rubrum pops up in my pots.
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