Moss pole head with spikes

One with medium spikes, one with long spikes - both tested.
Paint little support in the middle and your good to go. 

Print everything else according to the original model from Wivry. 

I have made my own improved Moss Pole, if you are interessted its on makerworld
Write in search :  The stackable Moss pole

Added spiked bottom for easier insert into the soil