03-07-2011, 08:51 AM
Something I have done to check viability of previous year's seeds is to sprinkle some on a moist paper towel, cover with another piece, place inside a plastic bag and place somewhere dark, like inside a cabinet, where I can check on them every day for signs of life.
Here's a handy chart on normal seed viability. I've gotten decent results from 4 year old tomato seeds, but as you can see, onions have the shortest viability of all... http://www.ipm.iastate.edu/ipm/hortnews/...seedv.html
Here's a handy chart on normal seed viability. I've gotten decent results from 4 year old tomato seeds, but as you can see, onions have the shortest viability of all... http://www.ipm.iastate.edu/ipm/hortnews/...seedv.html