I plant daffodil bulbs about eight inches deep. As I mentioned before, I don't use a ruler. As a married woman, I know perfectly well what six or eight inches looks like, so it's easy to make a good estimate. This mental measurement makes planting time much more interesting than it might be otherwise.

Mrs. Greenthumbs: How I Turned a Boring Yard Into a Glorious Garden and How You Can, Too (ed. 1993)