Irish Gardeners Forum Home
 FAQFAQ   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Custom Search
   
Weather Report /
Moon Phase for Ireland

Post new topic   Reply to topic    Irish Gardeners Forum Home -> Organic gardening in Ireland / Alternative and Sustainable Gardening practices

Trees of the legume family or nitrogen fixers.


 
Most Recent Posts funny
Last post: Ado 2
The Redwood Guy from Oregon Returns
Last post: mdvaden
At last! A garden joke. (except maybe it's not a joke!)
Last post: Ado 2
Do Dreams/Fantasies come true...I think so...
Last post: Geranimojess
 
Visit TheGardenShop.ie
Author Message
SecretGarden
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 09 Jul 2009
Posts: 8
Location: Ireland (South-East)

PostPosted: Tue Feb 22, 2011 11:45 pm    Post subject: Trees of the legume family or nitrogen fixers. Reply with quote

I'm sure the answer to my question is somewhere in some of the fourms, I just can't find it.

I'm looking for information on or names of trees that will fix nitrogen into the soil such as the legume family and will be happy to grow in Irish conditions.

Our soil is mostly heavy clay and we can be somewhat exposed to wind although I've done a reasonable job of planting over the years to filter it.

I'd be grateful for any information - many thanks
Back to top
View user's profile Send private message Visit poster's website
Dr. Sunny Thomson
Rank attained: Rowan Tree
Rank attained: Rowan Tree


Joined: 23 Aug 2006
Posts: 132
Location: ireland

PostPosted: Wed Feb 23, 2011 1:37 pm    Post subject: Reply with quote

Not a tree but our native Irish gorse fixes nitrogen. No problem with wind either.
Back to top
View user's profile Send private message
SecretGarden
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 09 Jul 2009
Posts: 8
Location: Ireland (South-East)

PostPosted: Wed Feb 23, 2011 2:06 pm    Post subject: Reply with quote

Thank you, Dr Sunny Thomson.

I'm really looking for support trees for the canopy layer and the layer below it to sustain food planting in a permaculture system.

Gorse is definitely an option at the shrub layer but I'm having difficulty identifying nitrogen fixing trees for the canopy - it appears as you say they don't exist.

Many thanks
SG
Back to top
View user's profile Send private message Visit poster's website
James Kilkelly
Rank: Site Admin


Joined: 30 May 2006
Posts: 2142
Location: West of Ireland

PostPosted: Wed Feb 23, 2011 2:12 pm    Post subject: Reply with quote

For nitrogen fixing trees look no further than our native black alder.
Here's a link to a piece I wrote on them........Black Alder ... Alnus glutinosa ... Fearnóg



Quote:
it actually makes nitrogen available to grass and other plants growing nearby, through the amazing nitrogen-fixing bacteria growing in its root nodules. These nodules add fertility to the soil wherever the alder grows, allowing the tree to tolerate poor soils, such as the clays found in many reclaimed lands.

_________________
Gardening books.

http://www.allotments.ie/ Ireland's allotments.
On Twitter... http://twitter.com/Allotments

Garden Consultation & Design.

Try my Garden Design home study course!
.
.
Back to top
View user's profile Send private message Visit poster's website
SecretGarden
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 09 Jul 2009
Posts: 8
Location: Ireland (South-East)

PostPosted: Wed Feb 23, 2011 6:09 pm    Post subject: Reply with quote

James

Thank you, I'm really delighted with that information.

James Kilkelly, was GPI. wrote:
For nitrogen fixing trees look no further than our native black alder.
Here's a link to a piece I wrote on them........Black Alder ... Alnus glutinosa ... Fearnóg

Quote:
it actually makes nitrogen available to grass and other plants growing nearby, through the amazing nitrogen-fixing bacteria growing in its root nodules. These nodules add fertility to the soil wherever the alder grows, allowing the tree to tolerate poor soils, such as the clays found in many reclaimed lands.


Are there other species of tree that will also fix nitrogen like the alder. I know there's hippophae and elaeagnus which are growing well here but they are more tall shrubs than trees. I would hope to have a diverse canopy if possible. Invasiveness of course will also have to be a consideration when choosing

Again many thanks
SG
Back to top
View user's profile Send private message Visit poster's website
James Kilkelly
Rank: Site Admin


Joined: 30 May 2006
Posts: 2142
Location: West of Ireland

PostPosted: Wed Feb 23, 2011 7:08 pm    Post subject: Reply with quote

Birch to a lesser extent....... Native Irish birch trees.. Betula pendula / Betula pubescens
The Californian lilac tree ...Ceanothus arboreus to a lesser extent also.
Although it is prone to frost damage and is quite shrubby in shape..

_________________
Gardening books.

http://www.allotments.ie/ Ireland's allotments.
On Twitter... http://twitter.com/Allotments

Garden Consultation & Design.

Try my Garden Design home study course!
.
.
Back to top
View user's profile Send private message Visit poster's website
SecretGarden
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 09 Jul 2009
Posts: 8
Location: Ireland (South-East)

PostPosted: Sun Mar 27, 2011 11:33 am    Post subject: Reply with quote

Thanks James
I've since managed to source Black Alder and some other indigenous plants. The spade has been busy Smile. I already have some birch and I've lost the Ceanothus to frost. I'm determined this time to plant as sustainably as possible....
Again Thanks
SG
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Irish Gardeners Forum Home -> Organic gardening in Ireland / Alternative and Sustainable Gardening practices All times are GMT
Page 1 of 1

 

Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group

Privacy Policy | Copyright © 2006 - 2017 IrishGardeners.com (part of GardenPlansIreland.com)