A.T. Robertson Commentary Mark 11:21

"And Peter calling to remembrance saith unto him, Rabbi, behold, the fig tree which thou cursedst is withered away." — Mark 11:21 (ASV)

Peter calling to remembrance (αναμνησθεις ο Πετρος). First aorist participle, being reminded. Only in Mark and due to Peter's story. For his quick memory see also 14:72.

Which thou cursedst (ην κατηρασω). First aorist middle indicative second person singular from καταραομα. It almost sounds as if Peter blamed Jesus for what he had done to the fig tree.