Picture of Gardening Science: Investigating Germination
The germination of seeds is a perennial* subject in science classes around the world.

Seeds are planted somewhere, they germinate, the students look at them.

The hard part is looking at what you are growing.

The point of this project is to provide students, teachers and interested parents with a starting point for investigating the germination of small seeds, in a way that makes them easy to see and record, using reclaimed hardware.

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Step 1: Such a complicated set of equipment...

Picture of Such a complicated set of equipment...
You need an old "jewel" CD case*, some paper towel or tissue, and some seeds (these are poppy seeds we harvested a couple of years ago).

*You'd be amazed how much science can be done with recycled scrap!

Step 2: Preparation

Picture of Preparation
The CD case has a "liner". You should be able to prise it out with your fingers, but, if your nails are very short, you may need a small blade to get between the inner and outer parts.

Pull out the liner, and discard it and any labels responsibly.  Depending on your local waste disposal services, both should be recyclable. 

Step 3: Growing Medium

Picture of Growing Medium
You need something to hold the seeds in place.

The easy way to do this is with a pad of tissue paper or paper towel, pressing the seeds against the CD case lid. The amount you need depends on the thickness of your paper - I needed two paper towels, folded into eight, with a little trimmed off the end.

Make sure you put the towel in the end away from the gap left by the liner.

Step 4: Just add...

Picture of Just add...
...whatever you need.

I dampened the towel with tap water, and laid the poppy seeds in a line, because all I am testing here is whether the seeds will germinate, or be fed to the birds.
sunshiine1 year ago
Thanks for sharing kiteman! Some seeds can be very challenging to grow as we are learning! I usually buy organic seeds because you can save them from year to year. I had an experience one year when I planted giant sunflowers, they were beautiful. I saved the seeds to plant the next year and when I did every plant was deformed. I learned something that year! Have a splendorous summer!
Kiteman (author)  sunshiine1 year ago
That's not organic vs non-organic, that genetics - a lot of plants sold are first-generation crosses of different plants, which don't breed true.
Thanks for the reply! OK, I can see how that works. I was under the impression organic seeds were not only organically but were not crosses either. I did a search and learned something thanks to you by the way! I am looking to buy heirloom seeds! They are open-pollinated.
Kiteman (author)  sunshiine1 year ago
foobear1 year ago
Any progress?
Kiteman (author)  foobear1 year ago
Absolutely none.

See AngryRedhead's comment about damaging seeds - it seems that poppy seeds often lie dormant until the soil is disturbed (hence the poppy fields of WWI). I don't know how to simulate that on damp paper...
I had some of these growing for a while. They are a tall lavender ordeal that look pretty much like an opium poppy and perhaps is the same species, though they call it breadseed poppy and I heard that they have been bred to have no opiates in them. Once you get one started, you will have them forever as they reseed prodigiously. Never had to disturb the soil as such. A tall shabby flower with short-lived petals that become an interesting round vase of seeds on a talk stalk. Not sure why the spice cabinet seeds don't seem to germinate though, maybe they are treated in some way which prevents it.
kirnex1 year ago
There is a lot of evidence that exposing seeds to smoke generated by burning organic matter greatly increases germination output in many varieties of plants--especially those that naturally occur in environments prone to fire.

I've read several articles online about this--mostly farming research done by co-ops. Definitely something worth checking out. I'm currently designing a vertical permanent garden structure, so I won't be able to test it myself until next year, I suspect, but I plan on trying it out. You can google "seed germination smoke exposure" for more information about it.
Really like the jewel case idea!

If you wanted to make the project slightly more interesting (well, in my opinion at least) and introduce more variables, you could discuss scarification which is a requirement for some seeds. For instance, bluebonnets set seed in the spring and then go through the heat of summer before germinating in the late fall, staying dormant through the winter, and growing rapidly in the spring. The summer heat naturally starts the process, but if you accidentally forgot a bag of seed you collected and didn't get it down soon enough, you could scarify it with acid to mimic what naturally happens. Another example is that some seed need to go through a chilling process before germinating such as Sarracenia (and possibly your poppies depending on the variety), and there are even seeds that are fire activated. The problem with testing some of this is that some seed suppliers scarify the seeds for the consumer, so you'd have to ensure that you got "raw" seed.

If you wanted to avoid all that and have nice big seed that are easy to germinate and observe, cilantro would be a good choice. I can buy a big bag of unroasted coriander from the Indian grocery store for pretty cheap, and I've had good luck using them as seed - much cheaper than buying packets.
Kiteman (author)  AngryRedhead1 year ago
Cool, thanks for that!
dakota13011 year ago
Yum. Poppy seeds are delicious!
dakota13011 year ago
That's actually really cool. I bet some teachers could use this in some of their science experiments!
-Dakota K.
Niftythrifter Blogger
This is a great Idea.Thanks for sharing.
foobear1 year ago
Are those poppy seeds from the store, like the kind you put on certain breads and salad dressings? Are they germinating? I read anecdotally that some of them likely will sprout into actual opium poppies. Though I've never had success with them.
Kiteman (author)  foobear1 year ago
Four days, and no sign yet.

They're from poppies we grew ourselves, but a lot of commercial flowers have infertile seeds, and these have been badly stored for a couple of years, so I'm just testing to see if they're worth sowing, or shall I just feed them to the garden birds.
spooledup71 year ago
Neat idea. I last germinated seeds by using a folded damp towel like you but placed it in a flat dish with a glass of water upside down to constantly keep the towel damp.
Great instructable.
Kiteman (author)  spooledup71 year ago
Thank you.
bajablue1 year ago
Genius idea!!!

I'm going to use a jewel case for germinating grapefruit seeds.
If you grow citrus from seed, it tends to produce really intense thorns. Needle sharp and three inches long on my tangerine tree. It also takes at least 8 years before it flowers, let alone produces :-). Grapefruits trees seem particularly prone to scale bugs, and their bark tends to split and drip sap if they get over-watered.

Pomegranates don't take as long to grow from seed and don't have thorns.
I truly thank you for this information. It's been so long since I've harvested fresh citrus that I forgot all about the thorns. Scale bugs are a pita, too! Maybe I should look into growing a pom tree from seed. hmmm......
Kiteman (author)  bajablue1 year ago
Cool, post pictures of the roots!
Will do!
I did the bean experiment in school too. That's a great reuse for a CD case. :D I might use one to start some seeds - I've been having fun lately starting plants from all the produce I eat.
Kiteman (author)  jessyratfink1 year ago
Oh, that's cool - a proper, self-sustaining garden.
Good Idea. Nice job. This Instructable reminded me of elementary school, when we put beans with paper-towel in a zip-lock bag and hung them in the windows.
Kiteman (author)  SlickSqueegie1 year ago
Thanks. The bags are a good idea as well.