The Indoor LED Auto Greenhouse




Introduction: The Indoor LED Auto Greenhouse

In this Instructable I will show you how I made my indoor LED greenhouse

Step 1: Materials / Tools

This list can vary depending on what you have and how much you want to spend on this project.

Blue LED light strip (i got mine from harbor freight for cheap)
A wall charger (the same voltage as your Blue LED strip, mine was 12 volts)
Some type of clear box ( I made mine from plexi glass )
A light timer ( this is optional but it makes everything much easier, I got mine from Ace)
A fan ( also optional but helps you regulate the temperature inside the greenhouse)
electric tape
something to plant
potting soil (any will work)

Hot glue gun
soldering iron (optional)
exacto knife

Step 2: Prepare the Grow Lights

Studies show that blue LEDs are perfect for growing plants so that is what we are going to use! I picked up my LED strip at harbor freight in the car and auto section. Make sure you check the voltage on your LEDs and find a wall charger that matches.

Now strip both wires and connect them, you can solder or just tape them it really doesn't matter

Step 3: Glue the Lights in Place

find a spot on your roof and glue the lights in place

Step 4: Drill the Holes

Drill a few small holes on top and a large hole to fit your fan on the side (if you dont have a fan make more holes)

Step 5: Install the Fan

I used screws to keep the fan in place pretty simple....

Step 6: Add Soild and Plants

put your soil and plants in, water it but not too much get it just right and check from time to time that your soil stays moist, if it gets dry then you are using your fan too much or you made too many holes

Step 7: Connect Your Timer and Maintain Your Greenhouse

connect your LEDs to a timer and make it turn on at times that are good for you and the plants, research your plants and see how hot and how much sun they like, add your thermometer in the greenhouse and if you see the temperature get too hot turn your fan on

good luck!

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    7 Discussions


    10 years ago on Step 7

    Blue is the spectrum you want during the growth phase, but if you are growing things that bloom and produce fruit you want to switch to red lights (in the 620-ish nanometer spectrum) for that phase of the growing. It depends on what you are growing when that switch happens. But a very cool little garden! Nicely done.


    Reply 10 years ago on Introduction

    Would black lights work as well or not at all.


    Reply 6 years ago on Introduction

    Not at all, for all over growth in an indoor greenhouse with LEDs you want both blue and red alternating along the strip. If you're starting from seed try to have more blue than red, but include both. Many hobbyist electric shops will sell LED bulbs and wiring strips for fairly cheap prices. I will also mention that most indoor gardeners claim that it works best if you can have a blue strip and red-tinted heat lights for temperature (you can find 4-6packs of 4watt in most DIY stores like Lowes). Sometimes the surrounding air just isn't warm enough to heat up the inside of the greenhouse for their plants. Just keep that in mind.


    Reply 9 years ago on Step 7

    im really not sure....


    10 years ago on Introduction

    Stupid question, but, does it work?

    I see freshly-germinated seedlings, but they would look like that on a windowsill or in a cupboard.


    Reply 10 years ago on Introduction

    well i started with just the seeds compared to my other ghetto greenhouse (made out of 2 liter soda bottles) they are growing much faster