That sounds like a great addition to the game! Plantations with fruit trees that produce income over time can add a fun and interactive element to gameplay. Generating income from fruit trees like orange trees and apple trees can simulate the experience of managing a real-life plantation.
Having a steady hourly income of 50 € and a monthly income of 1,200 € from these placeable trees can be a rewarding way for players to earn money in the game. The categorization of these trees under "Productions / Generators" makes sense, as they are actively generating income for the player.
Players can strategize and plan their plantation layout to optimize their income and create a thriving fruit business within the game. It adds a new layer of management and economic simulation to the gameplay experience. It will be interesting to see how players incorporate these placeable trees into their virtual farms and how it impacts their overall gameplay and financial strategies.