Just to summarise most of this thread, these are all the things in the mods in the FTB packs that allow you to excel plant growth. Even if these don't necessarily work on ender lilies... hey, there's always Magical Crops Would be nice to see some kind of uberbuild someone can create utilising all of this.
Bone Meal - Vanilla
Fertilized Dirt - Random Things
Sprinkler - Open Blocks
Sigil of Nature's Bounty - Ars Magica 2
Fertilizer - Forestry
Automation - MineFactory Reloaded/ThaumCraft 3/etc.
Lilypad of Fertility - Xeno's Reliquary
Lamp of Growth - ThaumCraft 4
Ritual of the Green Grove - Blood Magic
Accelerated Age - MystCraft
Accelerate Spell - Ars Magica 2
Tree of Time - Twilight Forest
Rod of Time - DartCraft
Sprinkler - RotaryCraft
Watering Can - Extra Utilities
Bone Meal - Vanilla
Fertilized Dirt - Random Things
Sprinkler - Open Blocks
Sigil of Nature's Bounty - Ars Magica 2
Fertilizer - Forestry
Automation - MineFactory Reloaded/ThaumCraft 3/etc.
Lilypad of Fertility - Xeno's Reliquary
Lamp of Growth - ThaumCraft 4
Ritual of the Green Grove - Blood Magic
Accelerated Age - MystCraft
Accelerate Spell - Ars Magica 2
Tree of Time - Twilight Forest
Rod of Time - DartCraft
Sprinkler - RotaryCraft
Watering Can - Extra Utilities