Meh its a picture of a pink flower. not bad
I don't think the time of the day has much effect when shooting in the forest as they are normally quite dark and the light doesn't shine through very easy.
Depending on the type of the forest I would think there is less light and most likely I would choose shooting with a flash; perhaps why most of your shots were blurry. Of-course I live in Vancouver and our forests have some tall fir trees and very little light gets through those monsters...
well, in Israel we get a whole lot of sun, even in the forest...
So, advice? shoot with the flash on?
Its honestly hard to tell since I've never seen the forests in Israel lol... From experience the forests we have here dont provide enough light even with the sun right above unless its a clear opening.
Best thing is to try with the flash and see what results you get.
For example the flower you posted seems to be in the shade and only a little bit of the bottom right seems to have light.
Out of curiosity what settings are you using on the camera with the blurred photos? ISO/Aperture/Exposure? Maybe post an example