This 27-page pdf file contains a cute plant observation log for primary age students and much more.
The log includes:
Cover page
Page for recording daily observation in words and pictures
Page for recording observation in pictures only (6 observations)
Parts of a plant page (flower, leaves, and stem, and roots)
What plants need page
Matching words and pictures page
Plant part jobs
Parts of a flower
Flower part jobs
Plant vocabulary word cards
"How to Grow a Plant" writing page