Q.Repotting a large philodendron…
I have an very old philodendron that desperately needs repotting. I am enclosing a picture. Any suggestions…what size pot etc…
Philodendrons can certainly be grown as houseplants. However, it is always a difficult adjustment for a plant growing in the ground to be moved into a pot. Pruning the plant back beforehand will help, along with other strategies to prevent transplant shock:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
https://www.gardeningknowhow.com/houseplants/hpgen/repotting-stress-treatment.htm
Here is more about philodendrons in containers:
https://www.gardeningknowhow.com/houseplants/philodendron/caring-for-philodendrons.htm
https://www.gardeningknowhow.com/houseplants/philodendron/repotting-tree-philodendrons.htm
If the shrubs don't make a healthy transition, you can save the plant by making a cutting, rooting it and growing it in its own pot:
https://www.gardeningknowhow.com/garden-how-to/projects/rooting-plant-cuttings.htm