~ 4th week ~
At the beginning of the week, both Jacks was 15 cm tall and over 30 cm in diameter.
They started to develop fifth layer of leaves. The lower leaves became huge, almost like chestnut leaves.
The main trunk is as thick as a pencil, and the space between nodes is 2 cm.
Jack-1 got a strange spot on a leaf - most likely caused by contact with alcohol paint on the information plate, during watering.
*** Future note: DO NOT use alcohol ink markers! ***
Both plants look nice, healthy, very vigorous and doing great.
At the end of the week, the first signs of flowering appears - hair on the nodes.
I sprayed the plants with a neem oil solution - prophylactically.
And increased the power of the lamps to 80%.