Calculate optimal watering amount and frequency based on plant type, pot size, season, and environmental conditions. Help you water plants scientifically.
Proper watering is the most important aspect of plant care. Both overwatering and underwatering can harm plants. This calculator helps you determine the right amount and frequency based on your specific plant and conditions.
The simplest method is the "knuckle test": insert your finger 2-3cm into the soil. If it feels dry, it is time to water. Other signs: drooping leaves, yellowing tips (overwatering), soil pulling away from pot edges. Different plants have very different water needs - this tool helps you calculate precisely.
Overwatering is usually more dangerous. It causes root rot from lack of oxygen, which is hard to reverse once it starts. Underwatered plants can usually recover with proper watering. The rule of thumb is "better dry than wet" - wait until the soil surface is dry before watering.
Spring and summer are growing seasons with higher water needs and frequency. Fall and winter are dormant periods with reduced water needs. In winter with indoor heating, air is dry and you may need to water more or mist plants.
Tap water contains chlorine and minerals that may harm sensitive plants. Tips: 1) Let tap water sit for 24 hours to let chlorine evaporate; 2) Collect rainwater (best option); 3) Use filtered water. Succulents and tropical plants are more sensitive to water quality.