I have a few bonsai like a Nana Juniper, Hinoki Golden Cypress, etc that say they like humid soil and air. It’s very dry here in Sacramento. I have seen some of my trees start to suffer under these heat waves and I believe I may be over watering them as well.
I know that I need to water them when the soil is dry to the touch, but is there any way to know what humidity is good to keep them at? We have a humidity checker that ranges from 1-4. I have tried to research online, but have come up rather empty. And most care guides just say they like humidity but nothing of how much.
Thank you in advance!