Summary: Flowers are among the most beautiful things in the universe, but even beautiful things have their downsides.
Flowers are amazing, so many bright, eye-catching colours, and so many delicate and delightful fragrances. How could anyone fail to feel happy surrounded by so much natural beauty? Of all things in nature, surely flowers are among the most loved and admired.
The artists of a billion worlds might copy their splendour, capture their images to delight future generations, but the Doctor can’t imagine even the finest artist in the universe ever succeeding in surpassing them. There’s a reason they’re so often given as tokens of love.
The Doctor adores flowers; he just wishes their pollen didn’t make him sneeze.