Science holiday homework

Clarence brought a packet of soil, a pot and some seeds home on the last day of term 2. His Science holiday homework: to grow sunflower seeds and observe. He excitedly followed instructions from Daddy and both of them planted the seeds inside:

 

After a few days:

On 16 June:

On 25 June:

His plant is growing very well. Thought it was an interesting piece of homework, teaching kids about responsibility of taking care of the plant and observation skills and know more about the various parts of the plant.
I initially thought it was easy to grow the plant until some parents whatsapp then I realised most of his classmates plants did not grow at all. So it was not that easy after all.
Are we just lucky or should I give the credit to Daddy?