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SOIL POISONING by BEECH TREES
The message
from "Rupert \(W.Yorkshire\)" contains these words: "Nick Maclaren" wrote in message ... Frankly, I don't believe that the toxin effects of either R. ponticum or J. niger are important - whereas the physical ones of many thicket- and canopy-forming plants with large leaves most definitely are. You just have to look for yourself to see the latter! But it is amazing how few scientists ever do look for themselves, as Rackham points out! I am totally with you on this one. At my previous house we used the leafmould in volume from beneath the Rhododendrons as a seed and potting compost without any bad effects. It was also noticeable that the areas that had been scraped clear of debris became host to a majority of the common garden weeds. I think you may both be confusing the state/ results of soil under a small local population of rhododendrons such as one might find in a domestic garden, with the soil left after huge dense very old ones are cleared from hilsides and woodland . It's very noticable here that when large areas of mature woodland are cleared of their longterm 20ft tall solid understorey of rhododendron ponticum, the only seeds that germinate the following spring, are rhododendron ponticum. The rhododendron leaf litter will have been swept away by winter gales leaving visible bare soil. All around are seeding trees, but it will takeat least two years before their seeds, or grasses or wildflowers, start to germinate on or colonise the naked bare soil on, light-filled woodland floor. Janet. |
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