Sprinkler for orchid shade table

[Fairorchids]

I am working on design for a shade table, with approx dimensions 2'x12'. I have an electronic timer, that will allow scheduled watering.

My question concerns finding a sprinkler that will provide adequate water distribution. Suggestions anyone?

If need be, I can manifold the outlet and connect to two sprinklers, but they still need to cover 2'x6' (60x180 cm) each.

I will consider building an overhead misting system, but I can't seem to find anything suitable.

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