The Time Garden, Volume 4 - Edward Eager

nTime and again, the children from Knight's Castle have longed for another magic adventure. But you can't find magic just anywhere. It doesn't grow like grass. It requires the right place and the right time... Or thyme, as the case may be. At Mrs. Whiton's house, magic grows as wild as the banks of thyme in the garden. Growing there is olden time, future time, and common time. Or so says the Natterjack, the toadlike creature who accompanies the children on a series of hilarious, always unpredictable adventures. Anything can happen, the Natterjack says, when you have all the time in the world.