could somone tell me how long dose it take for a plant to grow indoors under netural daylight plz
I'll make several assumptions here.
If you're asking how long does it take a cannabis plant to go from seed to harvest grown indoors under daylight, the answer is that it depends on the strain of plant, and it depends on when you plant the seeds (time of year) and it may also depend on how you control the light the plants get.
In general, plants exposed to natural sunlight will complete their flowering in mid-fall. That's around October in the Northern hemisphere, though the exact finishing date depends on the specific strain. Some may finish in September, some may go until November or even later.
If your indoor plants are exposed to 100% natural light (like in a greenhouse setting), that's your answer.
If you are controlling the light yourself, plants will usually finish flowering after about 8 weeks. The question then, is when does flowering begin? It can begin when the summer starts to end and the hours of daylight start to decrease, OR it can happen because you MAKE it happen by ensuring your plants get limited sunlight exposure (ie blocking the sunlight).
If you are artificially controlling the hours of light the plants get (even if it is natural sunlight), the plants could go from seeds to harvest in as little as ten weeks, or maybe even less, depending on the exact strain.