Should i grow grass for science project in pots or egg carton cups?

i need 30 plants!


10 per variable.


10 for organic fertilizer


10 for inorganic


and 10 for no fertilizer


to see which grows taller in a month.





egg cartons are good because i already have them, easy to carry around (their all attached) not to big, and will look cute





but will i be able to put the fertilizer in easily enough?





and for flower pots won't i need A LOT of seeds?





which should i use?

Should i grow grass for science project in pots or egg carton cups?
by the end of a month, your egg cartons may start to break down. Grass seed is dirt cheap, and I wouldn't be surprised if a garden centre would give you some used 6" plastic pots for free if you told them it was for a science project. If they want to sell, don't pay more than 25 cents per pot - they'll be making a profit on that as it is.





Your plastic pots should also have the volume of soil that they hold stamped on the bottom, which will hep in making accurate fertilizer calculations.





-actually, if you have to transport them, ask for cell packs with trays, not individual pots. that's the type of thing that annuals are sold in.
Reply:Egg cartons are too small to contain enough soil to allow your seedlings to get big enough for your experiment. I'd suggest small "starter" pots that you can get at most nurseries. They're usually 1.5 - 2 inches across; shape doesn't matter, although square pots can be easier to deal with in large numbers. To make them look nice, just get a seed flat (which you can also get at a nursery) to set them in to carry them around when you need to.
Reply:be creative--use an old scanner/printer, --gut it out ,,fill it with dirt %26amp; grow some lawns--use old old computers--speakers whatever you have on hand. dumpster dive for something--you'll know it's just right when you find it.grow it in a plain ol' huge glass bowl--bigger the better-- you'll figure out a way to keep their roots from creeping into each others space.