A term used when a plant sheds old blooms without human help.  This is not the same as dead-heading which involves removing seed heads to prevent seed set.

used to describe plants that drop spent flowers making room for new flowers and keeping the plant looking fresh

A special feature on BETTER and BEST State water heaters, which introduces cold water into the tank in such a way that very small particles of lime and other sediment are kept in motion so they don’t [..]

A feature of exterior, alkyd paints, whereby the dry film chalks which then washes down the surface with rain. Any contamination that has been deposited on the paint is carried away with the chalk.