Herbs forum: Moisture levels for Rosemary, Basil & Cilantro

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Dec 30, 2017 5:53 PM CST
Hey guys!

First post here so feel free to correct me if I'm posting in the wrong place.

I am building an automated watering system for my girlfriends herb garden(box) based on an arduino board. If there is interest I would be happy to post pictures.

I have been unable to find optimal moisture levels for Rosemary, basil and cilantro. The watering system I have in mind will have three zones for moisture with individual sensors.

Does anybody have ball park values for the herbs listed above?


North Central TX (Zone 8a)
Million Pollinator Garden Challenge
Jan 10, 2018 6:37 PM CST
Hello and welcome.

I can't really answer your question. Just wanted to say that I do grow rosemary and my tiny plant is now what I guess you'd call a shrub or bush. It's about 6' x 8'. And I rarely water it. I live in North Central Texas which is in gardening zone 8a. We usually have unbearably hot and way too long summers altho 2017 was different. Winter is totally unpredictable. So I don't know where you are (no, not your address) and thus what works for me might not work in your neck of the woods.

Cilantro doesn't do at all well in hot climates. You could water it all day long but it will bolt very quickly if the weather gets too warm.

Maybe someone else will hop in here with more information.

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