Part 5 of Ralph Griswold's series on designing L-Systems for pattern generation introduces delay chains, sets of rules that postpone the appearance of symbols and their generated strings. Using an example with a Fibonacci string L-System, it describes the chains as 'stalks' running down through the generations, with the rest of each generation as 'foliage'. It shows how modifying rules produces two stalks or several kinds of stalk, and includes diagrams of other possible stalk layouts. References list Parts 1-4 of the series.