Are Hollyhocks Toxic to Ponds and Their Fish

My pond is turning mucky and green. I know the green is algae but I have noticed a plant the is growing just on the outside of the pond and it does touch the water. I believe it is the reason for the pond’s muckiness and the horrid smell.

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2 Comments To "Are Hollyhocks Toxic to Ponds and Their Fish"

#1 Comment By AnnsGreeneHaus On 04/15/2013 @ 10:37 pm

I find no data showing Alcea being toxic to fish. As far as the muck and smell of your pond, this article might be of help: https://apps.rhs.org.uk/advice/profile?pid=447 ^[1]

#2 Comment By Nikki On 04/16/2013 @ 7:51 am

This article may help too: https://www.gardeningknowhow.com/ornamental/water-plants/wgen/algae-removal.htm ^[2]

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[1] https://apps.rhs.org.uk/advice/profile?pid=447: https://apps.rhs.org.uk/advice/profile?pid=447

[2] https://www.gardeningknowhow.com/ornamental/water-plants/wgen/algae-removal.htm: https://www.gardeningknowhow.com/ornamental/water-plants/wgen/algae-removal.htm

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