This year I have harvested more seeds than I will use next spring. I plan to vacuum-seal them and I want to know if, except for drying them really well, I should consider anything in particular.

These seeds were harvested from plants that belong to the following genera: Calendula, Celosia, Centaurea, Cosmos, Dianthus, Echinacea, Helianthus, Lavatera, Matricaria, Tropaeolum and Zinnia.

  • 2
    Can't speak for all of them, but Calendula and Nasturtium seeds I've just popped in an ordinary, sealed letter envelope (once they were air dried), folded up and put inside a tin, and they still grew five years later
    – Bamboo
    Dec 16 '17 at 19:33
  • 2
    At first I thought that you collect seeds with a vacuum cleaner.
    – VividD
    Dec 16 '17 at 20:10
  • I would just put them in the plastic and vacuum seal away. As long as they are dry they would be best preserved in a vacuum sealed bag in the freezer. I am still on the fence about freezing or just cool, dark, stable temperatures. Mine are all vacuum sealed..
    – stormy
    Dec 17 '17 at 4:39

The enemies of seeds are: heat, light and humidity, by controlling these you can store some seeds for many years.
Keep seeds at a cool to cold temperature of 40 degrees or less. Avoid fluctuations in temperature such as a garage or storeroom that is cold in winter but blazing hot in summer. Avoid light and never store seeds in direct sunlight or a well lit room.

  • are you sure about the light without heat? Dec 19 '17 at 22:21
  • I'm not sure what you mean, could you elaborate Dec 19 '17 at 22:24
  • Some seeds are inhibited by light. Dec 19 '17 at 22:26
  • Ok but I'm still not getting your point, you said are you sure the light without heat explain this comment from the context of my answer Dec 19 '17 at 22:30
  • Does light without any accompanying heat cause seeds to germinate? Dec 19 '17 at 23:54

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.