I have strawberries and mint that I'll be transplanting. Is there a better time to considering transplanting them? We are at 7000', with a microclimate zone of 3-4. We will have killing frosts until the beginning of June. I also have a stray package of corn seeds from last year. I was planning on using them to fill in the end of a row if I run short. Is it pretty much a lost deal to use seeds from the year before? Thanks for your input.