Possible Clues:

• Send Giles revised stuff that's recently arisen
• The littlest ones growing up in a nursery?
• Young plants
• Performs a song over heads of every expectant daughter left with those in The Nursery
• Holding flower back, shy son presents plants
• Little plants
• New plants
• Young Christmas trees carried around in sledges
• Baby plants bit of dad's heather with twigs around the outside
• Young ones in a nursery