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Poll: plants in gravel or clay/soil?
I'm planning an expansion of my pond next year to deal with some issues I
created. One of them is poor plant growth in marginals that are in clay soil but with no additional fertilizer. One one side of the argument is plants in clay/soil do better, but might not be able to get at nutrients present in the pond, thus allowing string algae to outcompete them as the clay "keeps" the nutrient flow away from the roots. (BTW, I'm not presenting this as fact, just trying to figure things out!). I have to wonder about this when I see arrowroot growing huge in the natural ponds around here, yet my in-kitty-litter arrowroot is but a puny shadow (well, it's also in a pot...). One could fertilize and they would do better, but why add nutrients here if the pond is already producing SA, meaning there is excess N and P in the pond already? (I, like many of you, add K regularly) On the other side is that plants in gravel or gravel beds, or just tossed into the water can take up nutrients in the water faster or better, allowing them to grow better and (hopefully) out-compete the SA. I suppose pot size per plant would also be a factor here - perhaps my marginals need bigger pots? But I do know that the WH and other toss-them-into-the-pond type plants (parrot feather, et al) do fine. So, how about a poll. Whose marginals are in gravel and whose are in soil of some type? How well do they grow? Do you fertilize, or add K at all to your pond? Maybe this could be a useful thread to collect some real life data. |
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