Thanks for the advice!. Sadly even after a mixture of testing with salt water, dry plants, soggy plants the logged results are always the same even if its not inserted into anything, looking like this

`Soil moisture sensor`

A=357

D=1

A=313

A=281

A=256

A=238

A=224

A=214

A=207

A=202

A=198

A=196

A=195

A=193

A=192

A=191

A=192

A=190

A=192

A=191

A=189

A=187

A=190

A=186

A=189

A=188

A=187

A=191

A=193

A=194

A=192

A=194

A=193

A=194

A=193

A=192

A=195

A=194

A=193

A=194

A=195

A=194

A=195

A=194

A=196

A=197

A=199

A=200

A=202

A=204

A=217

A=216

A=214

A=213

A=212

A=211

A=210

A=209

A=208

I've connected to 3.3v, GRND and A0. Everything seems to "work" im just getting numbers that make no sensce with no diffrence if soil is wet or dry...