What to avoid
Do not use outdoor planting calendars as the only guide. Indoor hydroponics can run year-round, but each crop still reacts to heat, light intensity, water temperature, and crowding.
If the room is warm, keep quick trays and herbs in rotation before committing to larger fruiting crops.
Best first move
If you are unsure, start Basil first and add Microgreens as the fast feedback crop. That gives you one reliable harvest window and one quick check that the grow area is working.
How this month connects to next month
Use April to plan the following crop before the current tray finishes. Indoor growers lose momentum when the system sits empty after harvest.