The 10% Drainage Flush Rule
Watering a small sip every two days leads to shallow root systems and salt buildup. The professional horticultural approach is the "Deep Drench" method.
Pour water evenly across the entire surface until approximately 10% drains out from the bottom holes. This flushes stagnant mineral salts and pulls fresh oxygen into the root zone.
Frequently Asked Questions
Should I water on a strict calendar schedule?
No. Calendar schedules kill plants because evaporation varies with humidity and temperature. Use this calculator as a baseline expectation, but always touch the top 2-3 cm of soil before pouring.