On 1/8/2022 at 6:54 PM, happysoup said:Thanks for the help and insight. A mystery so swiftly solved! I’d be interested in trying them but if they are out of season (and on top of that have travelled all they way to Wales!) these ones in question might not be at their best. Perhaps thats why they felt light and hollow? Unless they don’t go “off”?
You are welcome. That's what we do round here! 😃
The caltrops are in season in late summer and early autumn. As I mentioned, they are important at the Mid-Autumn Festival which this year will be on September 10th. If you found yours recently, I'm guessing they will be from the 2021 crop and will still be OK, if not at peak perfection.
I certainly hope they were imported. They have become a serious invasive species in many parts of the world where they have been introduced.