I have a world smaller than Earth (radius= 3,900 Km) with the same gravity and it is largely covered in interconnected continents. I also have a species of tree that can create a clonal forest of itself much like the Quaking Aspen. This tree also has the ability to redistribute water and nutrients to parts of itself that need it.
Edit:These continents are very fragmented and largely flat allowing for rain to make its way farther inland from the ocean.
Is it feasible for this tree to cover all of the planet's land area even in areas it shouldn't (Deserts) if so, is its nutrient redistribution ability plausible?