Japanese Knotweed

[TRADITIONAL LOGGERS]

OK Does burning work to kill growth and heat the roots system as I am told 1cm of root will make more plants.

[Mozza]

The simple fact is, without major digging of soil etc, you CANNOT kill it quickly, from what you've described, your looking at 2-3 years of spraying before its gone completely.

[Pedroski]

How about steaming the roots and a bug that was introduced to munch as methods I was told work?

 

It's about 10' x 10' area and needs to be done now to avoid spreading.

 

Why don't you want it properly dug and disposed of?

[APC]

Why don't you want it properly dug and disposed of?

 

Probably because that is the most expensive option.

 

I dealt with a similar sized area and nuked it within 2 years. I cut to the bottom node, burned the waste on site, used a syringe to fill to just below the top with 10% roundup biactive. Anything too small to inject I sprayed. Second year there was nothing to inject so sprayed in July and September. Third year, hardly anything left. Less than 1% of what was there originally. Read the label on the bottle though as it has specific section for application to knotweed.

[TRADITIONAL LOGGERS]

Yes expensive and where it's sited being miles from the nearest landfill and on stone mountain terrain. No idea how it arrived as there before we came and none seen in the area.

 

I assume like most spray works done when leaves are out full in the morning with no dew and no rain forecast. Is there a certain size of syringe used for this that does not block up?

[rgsltd]

when we spray it we put a little bit of washing up liquid in the mix as it helps it stick to the leafs

[Lumberjack Pad]

For such a small area you could always pull it up (carefully to get as much as the root system as possible) and burn on site.

[Gary Prentice]

OK Does burning work to kill growth and heat the roots system as I am told 1cm of root will make more plants.

 

I'm not sure, but I think it originates from volcanic regions of Japan and is adapted to excessive heat. I,ve seen dug up roots starting to grow on the actual bonfire site..