When purchasing kiwi seeds (Actinidia deliciosa or Actinidia chinensis), buyers must prioritize germination rate, which should ideally be above 85%. Ensure the seeds are freshly harvested (within the current or previous season) as viability drops significantly over time. It is crucial to specify the variety type, such as Green (Hayward), Golden, or Red-fleshed, as each has different soil and climate requirements. Additionally, verify the purity level (minimum 99%) to ensure no weed seeds or debris are mixed in.