philodendron bipinnatifidum ?

Lovely leaves

They are Sticki. I am still amazed (after our 12th visit) how massive the plants are around here. Lots of them are quite neglected and still thriving.

Klahanie:

They don't need much attention at all! P. pinnatifidum is the most widely grown large-leaf, trunking Philodendron in California. It's super hardy and easy!

They always look healthy.Looks like a good plant to have in poor soil but they take so much room. I also saw one which was in a concrete pot and the roots demolished it.

Yes, they looks healthy even in poor, dry soil. When given fertilizer and water they can grow faster and to be a giant with even larger leaves.

It does have a lot of aerial roots.