I was wondering the same thing Shirley...how do they secure the top?

A great idea also is a sturdy rubbermaid container that has a flat bottom. I use a pencil to vent.....

I have containers from dole fruit smoothies and they are a thicker plastic that I am going to use for my starters

I love using the plastic containers that greens come in for larger mini green houses.

I used clear plastic containers from grocery bakery depts, strawberry tubs, etc. to start seeds in. They sprouted faster than the seeds planted in paper pots. Great way to reuse something rather than just recycle it!

You could also use the containers from salads from places like /DQ or BurgerKing, etc. I keep all the little single serve containers from KFC also. these would all work.

I start seeds in salad containers too, prefer jiffy pellets but usually loose, damp soil. With lid on, wait 1 - 2 weeks for sprouting; no need to water. Place seedlings into egg cartons (perfect size for jiffy pellets). I punch holes in bottom to drain, cut lid off carton for drain pan.

I love this idea. Think I will give it a try.I've always wanted to but never did.to busy with family.

2 liter pop bottles make excellent terrariums to start seeds Just cut around the bottle but leave it attached. punch holes in bottom. When finished planting seeds. Tape around to keep lid down

Flash back to elementary school when we did a similar exercise.

Wonderful idea- just made tiny terrariums out of mason jars with all of our kids- this looks even easier and cheaper! thank you for sharing!

Have you tried using strawberry/grape tomato clear containers? You can use the large coffee filters to keep the soil from running out. Great way to plant early.

Great idea!! I've also used newspaper to make a seed pot. Very easy.

I found more things growing in containers that were left in the shed - My beat up, used shed has become the ideal green house.

Amy, do you mean you made a pot out of the newspaper? How did you keep it from becoming a soggy mess?

Here's a nice description on how to make newspaper pots

http://www.instructables.com/id/How-to-make-...

Thanks Walter. That's pretty cool. I will have to try that.

you can also use water bottles but of course now they are recycleable so

You can also plant in toilet tissue & paper towel rolls (cut into 3 or 4 pieces), just stuff a wadded up piece of newspaper in one end & fill with soil & plant. When it's time to put into the garden, just unroll it or plant the entire roll.

I am a teacher and use the plastic cupcake boxes that the kids bring in holding their birthday cupcakes.

I save plastic cups and I have a dremmel. I could make this work on my narrow East facing windowsills. I,m excited. Snow, cold and sinus infection have me longing for Spring and getting back into the dirt again. I am driving my house plant nuts, fussing with them.

Is there any outgassing from the plastic in the sun to the new plants?

I start with seeds to grow everything I've grown. But when i use the clear/cloudy plastic cups. The sun turns the dirt green where plastic touches dirt(all arouncup). and stunted the baby plants growth because the green is from the nutrients consumed by the sun green is bad. So I recomend colored cups or tin foil around them for bottom cup top cup can be slear for freen house effect...

Last year I started use 8 X 12 approx tins pans. Fill with dirt and plant seeds in rows about four rows and 8 seeds per row(32 per tin. Then I put in plastic bags from veg dept at grocery storeAND WATER ONCE... BAG KEEPS DIRT WET, DON'T HAVE TO KEEP WATERING!!!!! AND SEEDS SPROUT FASTER!!!!!!