Another cash crop...
This one is crocus, right? This is the plant from which the spice saffron is derived. Kashmir is well known for the cultivation of crocus. Returns will be very high, as saffron is widely regarded as the most expensive spice in the world.
True, but i have no idea of the $yield/acre... it's only the orange part that has value. 3-4 pieces by flower...
Then coca, tea and cannabis. Yep, tea... if you can make the highest quality, price follow fast.
Yezzir.
Pooooooooooooooooooooooooot. Then tea. Stepping off your list, fruit trees and ornamental shrubs, along with wasabi and ginseng. The past two are difficult and might require a specific biome.
But seriously, pot is 3k a pound wholesale ATM, in saturated markets. Saffron, by comparison, is median 2.5k, and the labor and space would eliminate a great deal of that profit.
Don't forget greenhouses, they might be a cool option and extend your planting choices, as well as your season.