Gardening Questions And Answers
How do you collect seed from a hardy geranium? After the flowers are fertilised, the petals fall and the base of the style rapidly lengthens and thickens to form a structure known as the rostrum, the ‘cranesbill’. At the base of the rostrum are five fruit segments (mericarps) each containing one seed.
Generally speaking, though, hardy geraniums prefer well-drained, moderately rich soil. Most will do well in either full sun or part shade, but they like to be fairly dry—they can become prone to mildew if kept damp. Plant hardy geraniums so that the crown of the plant is at ground level or slightly above.