How do cops find marijuana with helicopters?

they have detect with helicopters that look for infa red heat signatures. the plant gives off heat. you should be fine as long as its in a good spread area, they say pine trees help throw off the heat sensors.

Its not just that the plants give off heat...lots of plants give off heat (I'd say /all/, but then dick would point out 1 plant that doesn't). Police have spent a good bit of time studying the specific heat signature of MJ, and use it sort of like a fingerprint to differentiate between its heat and heat caused by other things.
One of the common tricks to prevent this is to put the MJ near plants that give off similar heat signatures. Corn is one of these plants...also, corn grows even faster than MJ, so it can be used for cover pretty well if no one else goes strolling your corn field.
Cedar/Pine forests are also a good bet. There tends to be a good deal of heat emitted from the ground in such areas (during spring/summer/fall anyway), the trees themselves do well to disguise the plants from normal aerial viewing while blocking less light than a leafier tree.

cannabis gives a distinctive green color when ready to flower and thats how they find you. Heat signatures on a plant? come one......thats how they find a grow room in your house.

Originally Posted by jesus of Cannabis

cannabis gives a distinctive green color when ready to flower and thats how they find you. Heat signatures on a plant? come one......thats how they find a grow room in your house.

Im unsure whether or not its true but have heard they can see the tops with infrared when flying over.

Originally Posted by newb101

they have detect with helicopters that look for infa red heat signatures. the plant gives off heat. you should be fine as long as its in a good spread area, they say pine trees help throw off the heat sensors.

also how low do the helicopters fly? and do they do it at night or day?

I'll bet they fly around and get little hits all the time, and only pay attention to anything really large. I'd say 5 plants would be invisible.

Originally Posted by jesus of Cannabis

cannabis gives a distinctive green color when ready to flower and thats how they find you. Heat signatures on a plant? come one......thats how they find a grow room in your house.

LOL? i beleieve in the heat thing. But what you just said is stupid tbh im growing in the forrest with pine trees theres also alot of differnt smaller plants and some grass growing but all plants are green most of them anyway and there are alot of differnt types of plants that are green near my plants.

Originally Posted by Potgrower3345

LOL? i beleieve in the heat thing. But what you just said is stupid tbh im growing in the forrest with pine trees theres also alot of differnt smaller plants and some grass growing but all plants are green most of them anyway and there are alot of differnt types of plants that are green near my plants.

There are a few things the cops look for when using a helicopter to spot growers outside. They fly by water and look for paths that lead from the water to a given area, they also look for trash on the ground. Outside grower will plant in a snail pattern or in rows which can be seen from the sky, and they can tell by the color of the plant. 5 plants I think you will be ok.....lol

As far as the heat thing- you can't tell the plants by their heat how stupid is that. Police helicopter use a camera called a FLIR(Forward Looking Infrared Radar) This camera cant look through walls it can just detect heat. The police use this to detect indoor growers The police even have hand held cameras in there cars. I wouldn't be to worried about these cameras, The U.S. Supreme Court has ruled a search warrrant must be obtained before police can use a FLIR camera on any resident either by air or car.