All Things Gardening forum→Gooseneck Loosestrife.

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Name: Jeanne
Lansing, Iowa (Zone 5a)
Vegetable Grower Birds Region: United States of America
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gardenglassgems
May 26, 2015 8:59 AM CST
How does loosestrife spread? By seed or by roots? Can you control it by putting it in a pot and then planting the pot in the ground if it spread by roots.
Yard decor, repurposing, and flowers,
Indianapolis (Zone 5b)
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Shade
May 27, 2015 5:54 PM CST
It spreads by roots/rhizomes. The roots creep under and sometimes over obstacles and then sprouts from where ever the roots grow. They are pretty aggressive. I have never tried planting them in a container and burying it, however I am sure that would keep them in check.
[Last edited by Shade - May 27, 2015 5:55 PM (+)]
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Name: Arlene
Southold, Long Island, NY (Zone 7a)
I was one of the first 300 contributors to the plant database! Tomato Heads Dahlias Houseplants Garden Ideas: Level 1 Photo Contest Winner: 2014
Celebrating Gardening: 2015 Plant Identifier Million Pollinator Garden Challenge
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pirl
May 27, 2015 6:30 PM CST
Maybe...if the bottom five inches of the pot was solid cement. It's determined to spread.
Name: Jeanne
Lansing, Iowa (Zone 5a)
Vegetable Grower Birds Region: United States of America
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gardenglassgems
May 28, 2015 5:05 AM CST
Thank you Shade and Pirl. If I ever get the chance to try Loosestrife, I will give it a try in a pot planted in the ground.
Yard decor, repurposing, and flowers,
Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Plant Lover: Loves 'em all! Peonies Lilies Enjoys or suffers cold winters Winter Sowing
Bulbs Region: Canadian Garden Ideas: Master Level Million Pollinator Garden Challenge
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CarolineScott
May 28, 2015 6:44 AM CST
I think it also spreads by seeds, so you would also need to deadhead the flowers to keep it from spreading.
I had one plant show up in my yard even though there were no others around.
I expect the seed came in a mix.
[Last edited by CarolineScott - May 30, 2015 10:15 AM (+)]
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Name: Arlene
Southold, Long Island, NY (Zone 7a)
I was one of the first 300 contributors to the plant database! Tomato Heads Dahlias Houseplants Garden Ideas: Level 1 Photo Contest Winner: 2014
Celebrating Gardening: 2015 Plant Identifier Million Pollinator Garden Challenge
Image
pirl
May 28, 2015 8:00 AM CST
Ours only spreads by those endlessly energetic underground rhizomes. This is very valuable information for those who have never grown it:
http://www.missouribotanicalga...

When I get to digging out more of it that strayed, I'll take photos of the root system.
Indianapolis (Zone 5b)
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Shade
May 28, 2015 5:39 PM CST
I have never had them spread by seed either. Those rhizomes are pretty tenacious though.

whisperingsage
Aug 10, 2017 5:04 AM CST
I have read it is edible. I am interested in forage for sheep and goats so I think they could easily keep it from doing too much harm.
Does anyone have a link to it's forage qualities? Also since it isn't known for being drought tolerant, wouldn't it just die if it is not being watered? ( I am in the great basin, high desert, everything here needs to be watered).
Name: Rj
Just S of the twin cities of M (Zone 4b)
Garden Ideas: Level 1 Plant Identifier Million Pollinator Garden Challenge
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crawgarden
Aug 10, 2017 9:29 AM CST
I have it in my garden, it is aggressive, however it is containable. So much of the "aggressiveness" in any plant depends on the climate, sun,shade etc. This year with all of our rain and cooler temps the Loosestrife seems to have been knocked on its heels. My containment consists of mowing it down if it gets into the grass or pulling it.
I like the way it looks!
Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed.

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