It’s easy to see a difference in quality when you compare two caladium plants side by side. Caladium tubers are graded by size. The largest ones are graded #1 and measure 1.5 to 2.5” in diameter. Smaller tubers are graded #2 or #3. Longfield Gardens offers only grade #1 caladium tubers. These larger tubers have more growth points, or "eyes," and grow into larger and fuller plants.