You should water your lemon tree according to its age, size, and whether it is planted in the ground or in a container, as well as the climate conditions:

• Young lemon trees : Water about twice a week to keep the soil moist, encouraging root growth and healthy development

. In hot climates or during summer, watering every 2-3 days may be necessary for young trees

• Mature lemon trees : Typically need watering once a week, providing a deep soak to encourage deep root growth. Mature trees can tolerate some dry spells but should not be left parched

• Potted lemon trees : Require more frequent watering than ground-planted trees, often about twice a week or more depending on heat and humidity. Water thoroughly until water drains from the pot to avoid overwatering or underwatering

• Climate and season considerations : In hot or dry weather, increase the watering frequency (e.g., every 2-3 days for young trees or every 3-4 days for mature trees in very hot conditions)

. In cooler or rainy periods, reduce watering accordingly and always check soil moisture before watering.

• Soil moisture check : Before watering, check the soil 3-6 inches deep; if it feels dry, it's time to water. Avoid watering if the soil is still moist to prevent root rot

• Best time to water : Early morning is ideal to reduce evaporation and allow water to reach roots effectively

In summary, water young lemon trees about twice a week, mature trees once a week, and potted trees more frequently depending on conditions. Always check soil moisture to adjust watering and avoid overwatering or underwatering. Deep, thorough watering is better than frequent shallow watering to promote healthy roots