What's the best way to increase the trunk size and reduce the leaf size on a ficus that I rescued from the wild. The tree has definitley grown in the year since owning it, with a notable difference in the nebari, however the trunk is only 1cm in diameter with the biggest leaves reaching 15cm in length. Im not quite sure if I should prune back now that its come into Spring and if so where and how much? I have fertilised once with Seasol liquid fertiliser as well as some slow release pellets. Is there another type of fertiliser I can use which would help to thicken the trunk?
I didn't find the right solution from the Internet.
Not sure if you will see this, because it has been a awhile and no one has responded to this post but I will go ahead and answer anyway! I bought a Ficus Benjamina houseplant from Home Depot 3 years ago. It had about 8 or 9 trunks all grouped together, branching out into about a 3 ft tall house plant. Each trunk was about as thick as a sharpie marker. I put it in a decent sized pot, lopped the tops off to about where I wanted the height and then wrapped the trunks tight with cellophane, all way down, covering the top of the pot so that the cellophane covered the soil. Then I stuck it the green house for the summer. The results were amazing!! The Trucks have tripled in size, and have since all grown together into one nice thick trunk, with dozens of airiel roots! My plan is to make it look like a banyan tree, and I am about to re-pot it into a nice bonsai pot, and it will soon be one of my best trees. I placed the thick tops that I lopped off into some water until they rooted. (ficus root very easily in a glass of water in the window sill) I put them all into dirt, and this summer they have doubled in thickness, and grown lots of airiel roots. I also make sure to water the tree into the center over the leaves, so all the water drips down and promotes airial root growth. Hope this helps!