They should be fine as they usually are viable for many years. Here is just one of many charts available (flowers listed below veg): seed longevity chart

you ought to know.. within 7 to 14 days .. whether or not.. another trip is necessary ...

ken

Thanks, sewobsessed and ken_adrian. I went ahead and planted them. And yes, i will know in a couple of weeks whether they are viable or not :)

You know, how long seeds will stay viable varies greatly from one plant to another, and also how you stored those seeds. Generally many will germinate when they're that old. I have had canna seeds germinate after excavating for a septic system, I know for a fact were at least thirty years old. But, I've had some seed not make it the next year. The more typical effect of age is just a decrease in the germination rate. Yes, I most certainly do sow seeds I've had for a year and generally been successful.