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Organic Gardening: Weeds as indicators of soil conditions

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Forum: Organic GardeningReplies: 3, Views: 77
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North Ridgeville, OH
(Zone 5b)

October 9, 2010
11:05 AM

Post #8146559

Has anybody got a lot of info on what a given type of weed can tell you about your soil? For example, I have one raised bed with a thick patch of Canada Thistle that butts up against a thick patch of Yellow Nutsedge. What conclusions (if any) can I draw from this, other than the possibility that thistle-loving birds crapped in one area and nutsedge lovers crapped in the other?
Glenwood Springs, CO
(Zone 5b)

October 9, 2010
3:00 PM

Post #8147099

Different plants grow in different soil conditions. When my hard drive crashed I lost a lot of sites and one of them was all about weed indicators. :( Canada Thistle will grow just about anywhere there is disturbed soil.

Liberty Hill, TX
(Zone 8a)

October 9, 2010
6:43 PM

Post #8147469

Johnston grass will grow in any soil good or bad. lol


Anne Arundel,, MD
(Zone 7b)

October 13, 2010
6:58 AM

Post #8153757

Pirate, as you worked that bed, you probably would assume that all the soil should be pretty much the same. I don't think there could be so much difference that would cause the two plants. I think it started with two different birds crapping once each, and just went from there.

I have read that lambsquarter will indicate low N ( I think) by showing some coloring in the leaves or stem tips.

I read an article once from a person who cured a big patch of Canada thistle , leading the writer to coclude that improving the soil with organics matter made it less hospitable to the thisltle there

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