Can Police in UK Find if you Plant in Garden Outside?

will i just threw 4 seeds out in my gardern, in were a few stinging nettles are and a few other plant. i then found that plants give out heat signals or something that they can be spotted from pigs helicopters? is this true cause if it is im taking them out. also if not any tips? ive got a apple tree just a few centimeteres for the nettles but it dosent get to cover it and ive got normal grass?
thanks

The plants dont give out heat signals, Indoor growers lights do. The only way they will catch u is if some 1 grasses u up or they see it.