Plants grow very slowly when its cold. So if you want yo grow something in a greenhouse in the the beginning of february two solutions : warm it or use a greenhouse inside the green house.
A minute project to create a very small greenhouse with an 8 liters water fountain.

Step 1: The Top

What you need : a water fountain and a good knife.
Cut the tap, then the top

Step 2: Bottom and Finish

cut the bottom, put some ground , water and seeds : finished.
Due to the shape, when the weather is cold the dampness condensate on the top part and get down to the the ground so it uses very little water : 2 cl a week.
Merci Author for the idea!
Thanks U.S. Neighbors for the brand names!
I want to add that plants do not need to have the tap cut off. They can thrive in a terrerium with a glass lid and not only does that make perfect growing conditions it keeps the plants watered.  As the water condensates on the glass it runs back down inside and back into the soil. The only downside would be overheating. To control that you would just unscrew the lid during the heat of the day and then put it back on later in the day.
hey what is the black thing at the bottom. I know the top is the water fountain. I need to build up something like that for my school project
I think it is the bottom of the bottle with the soil in it.
This is a great idea! I only have one question (and forgive me if it's out of ignorance) : doesn't the plastic leech chemicals when exposed to sunlight that may damage the plant inside?
Neat idea, but why cut the top off? Won't it retain more moisture with the tap in place?
The top is cut off to provide the plant with some much needed air.
Very nice. Can't say I have seen any 8l bottles like that in New Zealand though.
finally a use for all the damn Hawaiian punch i drink {a growing teenager needs his vitamins}
whoa, so far this is real easy btw it's a bottled garden :)
thank you Kathybear! I wasn't sure what to look for in the store! I am going to go try this out today, so excited!
A homemade greenhouse instructions to buiold and ways to use it wisely this got it all!
What a great idea!
Very fast and simple. I love it.
Those type bottles are <em><strong>Fiji</strong></em> water here in the U.S. The guy doing the Instructable is Canadian, eh?<br/>
actually, we have <strong>volvic</strong> here in the U.S. as well. i've gotten it from &quot;Whole Foods&quot;. <br/>
Hi Kathy : the guy is French (46 married 3 children) . I a am really amazed of the creativity and intelligence of the people on this site. We have not that quality of "Show and Tell" here in France.
Sorry, I forget the intertubes reach overseas.
this is a great idea... i'm going to try this for sure next season to get a jump start on my garden. I'll probably use peat pellets at the bottom for ease of transplant. very nice!
perfect for 1 seed..... i know what seed ill fill it with.
Very cool, makes me want to start planting things!
I have that same knife, the commando eagle, I think that's what it's called...
It's a good knive for diy jobs but don't carry it in your pocket in the streets.
i like it. i'm going to make one ;)
<a rel="nofollow" href="https://www.instructables.com/id/Ghetto-Greenhouse%3aSeed-Starter/">Same idea,</a> already done by MrBrownThumb<br/>
Great Instructable. I have never seen those bottles before, but they look awesome to do this. :-)
useful and cheap , is neat and looks nice , volvic .... ummm .... the water with volcanicity lol
Thats Genius! My mom is growing 6 small plants in the house right now, so I will tell her about this and help her out with it.
Great idea. +1

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