Lesson 3
The single trick that triples your yield
When seedlings have 3–4 leaf pairs, pinch the tip out hard — back to where the stem is still soft. This produces 8–10 long, branching stems instead of one short central one.
This single move is the difference between a few short-stemmed flowers and an armful for the vase.
If you forget to pinch, do it anyway when the plant is taller — you lose 2 weeks but still gain branching.