Hemp
This canopy of trees isn't actually a canopy of trees at all. When you look closely, you see these trees are actually giant stalks of hemp.
ま
あさ
None
Who planted all this hemp? Your mama (ま) did.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.