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water the plants what is passive voice
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Thre is no exact passive form of an imperative.
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Anonymous water the plants what is passive voice
There is no passive version of a command. The closest you can come is a paraphrase like this:

See that the plants are watered.
Make sure that the plants are watered.

CJ
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Comments  
The plants will be watered.
No, that is incorrect. Where did the "will " come from in the original question? If you have a subject, i.e. He waters the plants every day. Then the passive form is "The plants are watered everyday (by him)."
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 CalifJim's reply was promoted to an answer.

Let the plants be watered.

Let the plants be watered. Usually, only Kings speak this way!

Clive

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