According to an article in the Proceedings of the National Academy of Sciences (PNAS), scientists in Russia have grown plants from 30,000 year old fruit.

(The fruit found in n the banks of the Kolyma River in Siberia, was probably squirreled away by – squirrels, and the Institute of Cell Biophysics team raised plants of Silene stenophylla – of the campion family from it.

This is the oldest plant material by far to have been brought back to life, the record was previously held by date palm seeds found Masada in Israel, which were a mere  2,000 years old.)