Cacti are exceptionally good plants for pensioners to neglect, since there is no need to water them from October to April.

In general, the dullest cacti produce the most beautiful flowers, while those in glorious bloom when you buy them will probably never flower again.

All cacti have extremely long and unpronounceable names and attempting to use them in conversation may lead to mouth ulcers and tongue blight.

The cacti usually seen in old cowboy films are in fact telegraph poles designed by Chickasaw Indians in Oklahoma.