Bili-silly Totem Pole Plant,Coir Moss Totem Pole,Coir Moss Stick for Plant Support Extension,Climbing Indoor Plants, Creepers

How many of these can you stack high without it being unstable in a big enough pot?

How do I water the pole itself?

Would this pole work for my monstera thats still growing? And how far does it extend to, how tall?

It shows the customer pouring water into the stick, what is the reason for this if it has pvc and no water is absorbed? is this false advertisment?