Rare blooms, on two giant agave plants - commonly known as 'century plants' for the age that they can reach before they flower - which have flowered for the first time in nearly 30 years at the National Trust's Glendurgan Gardens in Cornwall. The plants, which are nearly 30-foot-high and are native to Mexico and parts of America, are in what is usually a private area of the 26-acre, 19th century garden but proving so popular that a special enclosure has been provided for people to get close to them.They are thought to have grown from seed from the last agave which flowered back in 1976. Stock Photo