Zone 9 Nitrogen-Fixing Water-Tolerant Tree or Shrub?

Posts: 138

Location: Galicia, Spain Zone 9

posted 12 years ago

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So around my wetland I wanted to plant some water-tolerant trees. In my village, hazelnut and hawthorne grows along rivers.

So I am going to plant hazelnut and hawthorne a few meters uphill from the wetland and I want to accompany them with a nitrogen fixer.

I've looked through a lot of lists of nitrogen fixers but I wanted some suggestions from personal experience. Im planting in a location where I don't want anything too tall (so no grey alder here) so I need a nitrogen-fixing shrub or small tree whose roots would be within reaching distance of the soil of the wetland and who during heavy rainfall events may be temporarily waterlogged.

Any ideas?

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Alder Burns

pollinator

Posts: 1886

Location: southern Illinois, USA

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posted 12 years ago

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There are some shrubby alders, such as those native to eastern North America. Or you could plant whatever alder you can find and just plan to coppice it.

Jose Reymondez

Posts: 138

Location: Galicia, Spain Zone 9

posted 12 years ago

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For some reason I remember reading grey alder coppices poorly, Ill recheck that and look in to the other alders.

Edit: Yeah there are some nice shrubby waterside loving alders, ordering seeds!

Mike Turner

pollinator

Posts: 508

Location: Upstate SC

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posted 12 years ago

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Alnus serrulata (3m tall) and Gleditzia aquatica (up to 15m tall ) are native in swampy areas of northern Florida (zone 9).

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