House Plant Problems
I'm not sure if I'm posting this in the right location so please move it if I'm wrong to post here. I have a few problem houseplants and I'm not sure what's wrong. I think there are a few problems....
In the lower left, you can see a scraggly mint. I have similar problems with basil. I have seen mint around the city and it is so full and the leaves are large and deep green.
Behind that is another plant (not sure what it is) and the leaves are very pale. They used to be very green but now they are mostly yellow.
In the back is a sor tof rubber-like plant where the new leaves are coming in small and yellow-red.
Finally in the lower right you see a water plant (arrow plant?) whose leaves are starting to become striped with yellow.
I have given them all fertilizer (teal colored balls that are just NPK) and water fairly regularly. Any ideas?