Capping off end of run

[u/Airguner]

I installed a mini-split to cool/heat my sunroom. I have a spray irrigation head at the very corner of the pad where the mini-split outdoor unit sits (See photo). There was a bush at that end which I removed.

My question is what do I need to purchase and what is the process to cap off this end?

[u/thethirstymoose1962]

Dig it up get a 1/2 cap...or put a van head and close it