Soil PH Meter When to start testing

[SandraCloner]

I have plants in each stage of growth and was wondering at what stage should i start testing soil PH? I recently got the Bluelab Soil Ph Pen and when watching videos on its use i noticed they were mostly used on bigger plants. Should i test it from the beginning or should i test it before i decide to start flowering? Also how often should i test the plants? I'm new to soil ph testing so i'm not quite sure on any of this.

 

[EARTHWALKER]

I test before planting the seedlings and test every 2 days until harvest. A bit excessive maybe, but I never suffer from PH issues any more.
You can certainly do no harm in testing.

 

[iwltfum]

I test before planting the seedlings and test every 2 days until harvest. A bit excessive maybe, but I never suffer from PH issues any more.
You can certainly do no harm in testing.

Agreed, test away. Test before you plant, after you water, after it sits for a day or two. If it stays stable after a couple of tests, then you can probably back off on the frequency a little, but keep an eye on it throughout the plants life for sure. The less change in pH, the happier they will be.