50 years ago, a 550-year-old seed sprouted
Since then, much older seeds have proved resilient
![Silene stenophylla](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/10/081518_TS_50ya-seeds_feat.jpg?fit=860%2C460&ssl=1)
OLD GROWTH Fruit frozen for more than 30,000 years in a squirrel burrow in Siberia yielded this healthy, flowering plant in 2012.
S. Yashina et al/PNAS 2012