Oak Tree (IMAGE) Royal Botanic Gardens Kew Caption This is an oak tree, one of the UK heritage trees that produces recalcitrant seeds and can't be banked in a seed bank Credit Royal Botanic Gardens, Kew Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.