Myron Platte wrote:
Jonathan Baldwerm wrote:
Myron Platte wrote:If you plan on removing the scotch broom, know that it is a pioneer nitrogen fixer, and it will need to be replaced with something else that fulfills the same function. I searched pfaf for nitrogen fixing pioneers that can tolerate maritime exposure and grow in your climate zone. The list is surprisingly short:
https://pfaf.org/user/DatabaseSearhResult.aspx
I would definitely axe the scotch broom. It has decimated our sand dunes up the coast in southern Oregon. It also has been shown to alter soil chemistry to make it harder for other plants (especially natives) to establish. Its seeds can last for 80 years, making it nearly impossible to fully eradicate. Around here, the native coastal nitrogen fixers are primarily lupine species, though I do see trifolium wormskioldi growing on the beach at a few parks, but it is not common. There are species of ceonothus that grow on the coast.
Deerr vetch and mountain goldbanner occasionally show up near the coast as well.
Scotch broom is a pioneer. First it dominates an area, then dies off when conditions are less favorable. Left to itself, a field of scotch broom will progress to a forest. Bushy nitrogen fixers are essential to succession.
Myron Platte wrote:If you plan on removing the scotch broom, know that it is a pioneer nitrogen fixer, and it will need to be replaced with something else that fulfills the same function. I searched pfaf for nitrogen fixing pioneers that can tolerate maritime exposure and grow in your climate zone. The list is surprisingly short:
https://pfaf.org/user/DatabaseSearhResult.aspx