Tomato Seeds 25 Lemon Boy Yellow Tomato Seeds 72 Days 25 Lemon Boy Tomato Seeds This 25 Lemon boy tomato seeds these are fresh out of our tomatos from this year will be super for next years planting. This tomato is yellow and averages about 4 to 7 ounces. The plants end up being about 24" to 36" tall they take about 72 days after starts are set out.