When sourcing 'Can Flowers'—which typically consist of seeds, a growth medium (like vermiculite or peat moss), and a nutrient starter inside a sealed tin—you must prioritize substrate quality and seed viability. Ensure the growth medium is sterilized to prevent mold during transit. The tin can should feature an internal anti-corrosion coating (usually food-grade epoxy) to prevent rust when the user adds water. Additionally, verify that the easy-open lid is smooth to prevent injury and that the drainage hole design at the bottom is functional for root health.