As long as the seeds are good, the landlord can rest assured that they will sprout in the coming year. My family is in the seed business. Some individual seeds can germinate within three years. But the germination rate is much lower.
Suggestions; If the landlord doesn't sell it to himself, you can keep your seeds or use them.
If you want to plant it for sale, or plant it in large quantities, I suggest buying a new one.
Now that the new seeds are guaranteed, you can cover the loss of production or loss of the melons you bought! Thank you for your adoption!