From tiny acorns

Found a sprouting acorn on a walk a month or two ago. Put it in my coat pocket and forgot it for a week. Put it an eggcup with a wet tissue and forgot it again, though S watered it once I think, until S noticed how much it had grown the other day. Plan to put it in some compost now and maybe put it in the greenhouse - I expect it’s getting a bit ‘leggy’ being indoors.