Best water plants for zone 6?


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What are some of the best "nutrients consuming" plant I could put in my pond?
I currently have: Black Taro, water Marigold, water Hyacinth, Cannas, umbrella Palm and another plant with blueish flowers I don't know the name of.
I used to have water irises but I didn't like all the dead leaves cleaning early in the season, and I had water Lilly but I'm not sure with the new depth (over 4') I can still have the nice ones

Are there any other plants that would do good in zone 6, other than those mentioned above?
 
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I always like to have some kind of rushes or reeds - I love the upright growth and they put out a tremendous root system. I don't remember the names of all of mine, but I have some that are blue-stemmed, some that are variegated and some that are just lovely green. And I love irises - not sure why you feel they have more dead leaves to clean than any other pond plant, other than they can grow large.

Is your pond 4 feet deep all around? If so, you could still have water lilies - some people use a crate turned upside down to raise the level of the pot to where the plant will be happier. Just look for the varieties that enjoy deeper water. I think water lilies are a must in a pond! They are just too pretty to pass up, plus they provide great cover for your fish. And there aren't many things that can grow IN the pond - if you don't have lilies or lotuses you will have only marginals or floaters to choose from.
 
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I always like to have some kind of rushes or reeds - I love the upright growth and they put out a tremendous root system. I don't remember the names of all of mine, but I have some that are blue-stemmed, some that are variegated and some that are just lovely green. And I love irises - not sure why you feel they have more dead leaves to clean than any other pond plant, other than they can grow large.

Is your pond 4 feet deep all around? If so, you could still have water lilies - some people use a crate turned upside down to raise the level of the pot to where the plant will be happier. Just look for the varieties that enjoy deeper water. I think water lilies are a must in a pond! They are just too pretty to pass up, plus they provide great cover for your fish. And there aren't many things that can grow IN the pond - if you don't have lilies or lotuses you will have only marginals or floaters to choose from.
Only the main part of the pond is over 4' deep, but that's not the only thing , When I hired contractors to enlarge the pond last year, they raised the water level so high that now the mesh (you see in my Avatar) that I use to cover the pond, is barely above water level, I don't think water Lilies would do good there
The upper section , where I keep the plants is about 1' deep, I'm assuming that's way too shallow for water Lilies?
 
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Sedges are great for sucking up nutrients and look very nice also. Many types to choose from. I like my variegated one on the left by the gator. It's in a pedestal pot on a shelf down about 18".

View attachment 102040
Your pond looks awesome!
By "Sedges" you mean ornamental grasses? I've used them and loved them, I just didn't know given the limited space if they were the best choice.
 
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I know window boxes can be a pain to keep watered, but they really raise the cuteness factor
 
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You make a good team !
I know window boxes can be a pain to keep watered, but they really raise the cuteness factor
We sure do make a good team, you should see the chicken coop we are building!..again my design (other than ventilation) and his "power tool" abilities :)
I water my window boxes (4 of them) from inside the house once a day, or even less if it rains
 

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Oh no, my pond is in full sun!:rolleyes:
 

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In the upper pond you could add pickerel rush, hornwort and water celery, all (especially the latter two) grow like weeds, so would be great nutrient consumers. Also make good hiding places for fish fry. Just beware the water celery, as it spreads very quickly, don't add it if you don't want to have to weed it out of the pond, but to me that is what makes it a great plant for nutrient export. I have all of these in my pond and the water celery has grown around the whole perimeter of the pond through the rocks and thick patches in the shallows. Personally, I like that look as it softens the edges of the pond. Do you have koi in your 4' deep pond, if so they will keep it under control there.

Looking at your pond pics, lilies would grow fine in a foot of water in the upper pond. It would need to be a small/medium variety and be placed off to the side away from the waterfalls a bit in a shallow pot.

To me it looks like your net/mesh cover is up plenty high for lilies in the deep pond also, just boost the plant pot up on crates as was mentioned. The only issue in there will be if you have koi of any size as they will munch on it and uproot it.
 
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For nutrient consumption you can't go wrong with irises, yellow being the most aggressive growers that I have, I'm zone 6b btw.

I don't use rushed or cattails but those are the second best of you want consumption power houses.

I noticed that obedient plants don't mind an inch of water. They flowered nicely in the second year and grew a lot. They consumed a lot from my experience.

When creeping Jenny gets going it sucks well it seems but the crown has to be above water.

Lobelia has nice flowers but you will need to lift the crown above water.

Finally, if you can pick up hardy hibiscus they grow aggressive but need a dry crown too.
 
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In the upper pond you could add pickerel rush, hornwort and water celery, all (especially the latter two) grow like weeds, so would be great nutrient consumers. Also make good hiding places for fish fry. Just beware the water celery, as it spreads very quickly, don't add it if you don't want to have to weed it out of the pond, but to me that is what makes it a great plant for nutrient export. I have all of these in my pond and the water celery has grown around the whole perimeter of the pond through the rocks and thick patches in the shallows. Personally, I like that look as it softens the edges of the pond. Do you have koi in your 4' deep pond, if so they will keep it under control there.

Looking at your pond pics, lilies would grow fine in a foot of water in the upper pond. It would need to be a small/medium variety and be placed off to the side away from the waterfalls a bit in a shallow pot.

To me it looks like your net/mesh cover is up plenty high for lilies in the deep pond also, just boost the plant pot up on crates as was mentioned. The only issue in there will be if you have koi of any size as they will munch on it and uproot it.
I'm definitely not interest in invasive plants, but I will try the lilies on top also, thank you!

For nutrient consumption you can't go wrong with irises, yellow being the most aggressive growers that I have, I'm zone 6b btw.

I don't use rushed or cattails but those are the second best of you want consumption power houses.

I noticed that obedient plants don't mind an inch of water. They flowered nicely in the second year and grew a lot. They consumed a lot from my experience.

When creeping Jenny gets going it sucks well it seems but the crown has to be above water.

Lobelia has nice flowers but you will need to lift the crown above water.

Finally, if you can pick up hardy hibiscus they grow aggressive but need a dry crown too.
I have to google some of the plants you mentioned, but I'm interested in the cattails, could I put them in the lower section and cut an opening on the mesh, or are they invasive?

Thanks for your replys :)
 
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I'm definitely not interest in invasive plants, but I will try the lilies on top also, thank you!


I have to google some of the plants you mentioned, but I'm interested in the cattails, could I put them in the lower section and cut an opening on the mesh, or are they invasive?

Thanks for your replys :)
Dwarf cattails are not as invasive as regular.
 

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