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#1
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Himalayan Balsam
I've taken over a neglected alloment.
Some of the raised beds are full of soggy, slimy stems of himalayan balsam which, in a way, is fortunate, because they've crowded out all the other weeds. I know that I'll have to deal with seedlings, but am I right in thinking that, because they're annuals, I can rake up the old stems and then rotavate the beds and they won't regrow from the roots? Does the same apply with rosebay willowherb? Thank. |
#2
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Himalayan Balsam
Mel writes
I've taken over a neglected alloment. Some of the raised beds are full of soggy, slimy stems of himalayan balsam which, in a way, is fortunate, because they've crowded out all the other weeds. I know that I'll have to deal with seedlings, but am I right in thinking that, because they're annuals, I can rake up the old stems and then rotavate the beds and they won't regrow from the roots? From the Environment Agency website: "Control: Control measures should aim to prevent flowering and if this is achieved before seeds are set, eradication is possible in two to three years. Chemical control: can use glyphosate or 2,4-D amine. Need to be used whilst plant is actively growing in early spring for best effect. Cutting/mowing/strimming: cut at ground level using a scythe, before the flowering stage in June. Do not cut earlier as this promotes greater seed production in any plants that regrow. Cutting should be repeated annually until no more growth occurs. Pulling: shallow-rooted plants can be pulled up very easily and disposed of by burning or composting, unless seeds are present." Does the same apply with rosebay willowherb? That's a perennial, with clumps of big fat white roots. You can get rid of it by repeated pulling, and although it seeds freely, it doesn't seem to seed quite as freely as the smaller willowherbs -- Kay |
#3
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#4
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Himalayan Balsam
"K" wrote in reply:
I know that I'll have to deal with seedlings, but am I right in thinking that, because they're annuals, I can rake up the old stems and then rotavate the beds and they won't regrow from the roots? "Control: Control measures should aim to prevent flowering and if this is achieved before seeds are set, eradication is possible in two to three years. Thanks to everyone for all the advice re Himalayan Balsam. I managed to get out before the snowfall and I raked them out and then covered the beds with tarps. I await the lovely crop of seedlings in a month or so! |
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