Cannabis plants have been found growing at a field off Calbourne Road, Newport.
Police say they have seized them and appealing are for information.
Posting on Facebook, Isle of Wight Police said:
"It appears someone has put in a lot of time and effort to grow these.
"They have been seized. If they are yours and you are worried someone has stolen them, you can come down to Newport Police Station and we can put your mind at ease."
If you have any information, you can let officers know here: https://www.hampshire.police.uk/…/something-youve-seen-or-…/ or anonymously here: https://crimestoppers-uk.org.