The Horologium Florae – the flower clock – is botany’s most whimsical contrivance. As certain species of flower open and close at certain hours of the day, a cleverly assembled flowerbed could allow an onlooker to tell the time. Or so the theory goes.
More on my (sparkly new) Substack. No paywall, don’t worry. I’m just told that it’s a good place to publish miscellanea.