Silver tree (The Sensorites)

The Doctor and Susan's homeplanet, (TV: "A Desperate Venture", PROSE: The Sensorites, et al.) which by many accounts was Gallifrey, (TV: Gridlock, PROSE: Cold Fusion, et al.) had bright silver trees. (TV: "A Desperate Venture", Gridlock, PROSE: The Sensorites, Cold Fusion, et al.)

According to one account, the trees were literally named silvertrees (PROSE: The Infinity Doctors) although by others the trees were called Ulanda (PROSE: Blind Fury) or Cadonwood trees. (AUDIO: Neverland) They were silver-leafed. (PROSE: Lungbarrow)

Susan once told a Sensorite about her planet's silver trees. (TV: "A Desperate Venture", PROSE: The Sensorites) By one account, the specific trees Susan remembered were those in the House of Blyledge's walled garden, (PROSE: Cold Fusion) by another these trees were in a garden in Arcadia. (AUDIO: The Shoreditch Intervention)

The House of Lungbarrow was surrounded by a forest of silver trees which swayed in the wind. (PROSE: Lungbarrow)

The Tenth Doctor once recalled that the silver trees reflected morning sunlight, making it look like the forests were on fire. (TV: Gridlock)

The Homeworld's colony Cartago had silverleaf palm trees. (PROSE: The Bloodletters)