Sycamore trees

Question

Can it be necessary to fell a beautiful old (more than 30 yrs old) tree, as it is shading ‘a garden’? Are these trees a problem for any other reason, apart from ‘shade’?

Answer 1

The American Sycamore does have some allelopathic properties.

The effects of the chemical can come from the roots and the fallen leaves.

https://www.gardeningknowhow.com/garden-how-to/info/allelopathic-plants.htm