How do plants know when to flower? Have you noticed that many early flowers are yellow? Why is that so?

they're yellow to attract bees/insects for pollination.








and they flower when there are many insects around to pollinate them - usually in spring when its warm and sunny. they can detect how much sunlight they are exposed to and can tell when this is.

How do plants know when to flower? Have you noticed that many early flowers are yellow? Why is that so?
Do you instruct your hair to grow ? Or does it grow naturally.





Similarly plants also flower naturally.





I dont know the second answer
Reply:It is because of the biological clock. And no I never note that.
Reply:Plants know when to bloom by the amount of sunlight they recieve each day. Plants have a biological clock that is very accurate.In commercial flower production facilities, the number of hours of light a plant gets is regulated so as to force the plant to bloom at the right time. I have never noticed that plants that bloom early are more often yellow.But perhaps they are and I have just not paid attention to that.
Reply:The flowering plants don't command themselves to produce flower. However when there are the right conditions for an offspring to be produced, the plant automatically produces flowers to attract insects to help them with pollination. As a result the fruit will be produced.





That's why in spring we see a lot of flowers because the wheater and enviroment would be perfect for them to do so. If you notice, when flowers open up in spring and then rain falls the flowers wear off the tree because the temperature has gone down!