[jjirons69]

I'd remove the tin roof. I've always planted my herbs in full sun, full rain. When they're first sprouting, the rain may be a little hard on them, but within a week or more, they should be able to handle themselves. Babysit them - bringing them in during rain showers until they get big enough. The oppressive heat can also weaken them. The problem with putting them in the shade is they grow leggy and lose rigidity.