Is it necessary? No. Is it useful?My hot wire is set off and only in contact with insulators.
My chicken wire is thoroughly grounded all around the garden.
I only ran the ground to the ground rod--should I continue the wire from the ground rod to the chicken wire fence?
The charger light is blinking which indicates the system is functioning, so that's a good sign.
Here is a photo of charger and ground
In my case, yes. I have a "small" amount of fence - about 1/3 mile - and soil which is NOT a good conductor. So connecting the "ground" of my charger directly to the livestock fencing fixes a lot of problems. On good soil, or with a small fenced area (think a couple hundred sq feet, not a handful of acres), its likely completely unnecessary (except that it saves you the cost of a ground rod, of course.