Most leaf-litter per tree

Sort of a sepecific question, does anyone know if there's information on the average amount of leaf litter produced by different trees and shrubs?

Curious regarding different parts of a set-and-forget soil building method, this is just one of a thousand questions that go into it, but it's one i'm having trouble finding data on

While not a huge producer of leaf litter per say, Gumball/Sweetgum trees  produce a lot of biomass in the form of leaves, "gumballs", and flowers.


Poplar and willow are noted for their speedy growth, but how much leafy boimass they produce is a good question.

I don't know of any lists of leaf litter per tree but I know Paulownia Elongata produces an immense amount. I'd expect the same of Tomentosa [which might survive in your climate, online it's said to go down to Zone 5, not sure what your local 'average low temperature' is]...

Red Alder too, but I don't believe that's hardy to your area [but other Alder might be.]

My non scientific answer is big leaf maple.. my yard is easily a foot deep in leaves and the tree is not done dumping yet!

Another anecdotal answer - Sycamores - native, fast growing, first to loose leaves, last to put them out. We get fairly large leaf mold piles from the 7, 18 year old trees.

Just as important for some designs is not just how much leaf litter is produced, but over what timeframe, and how durable is it to weather and decay.  A Paulownia might drop a lot, but after a few rains it's pretty much gone.  A eucalyptus or holly or pine tree might not produce so much, especially not all at one season (true of many evergreens), but what is dropped is durable and relatively resistant to decay, and can last for years and build up a thick mulch.  This can be a resource in certain settings and climates, and a problem (such as a fire hazard) in others.