Japanese maples require careful watering to thrive, with frequency depending on whether they are planted in the ground or in containers, as well as environmental conditions.
How Often to Water Japanese Maples
- In the Ground: Water 2-3 times per week during hot weather or dry periods. Newly planted trees should be watered every 2-3 days for the first month, then about once a week as they establish. Established trees are fairly drought tolerant but should be watered during droughts or extreme heat
- In Containers: Container-grown Japanese maples dry out faster and need more frequent watering, typically once a day during hot weather or 3-4 times per week depending on temperature and rainfall. Water thoroughly until it drains from the pot, and avoid letting roots sit in standing water
- During Dormancy or Storage: If stored indoors or in a garage, water 2-3 times a month, allowing the soil to dry out between waterings to prevent root rot
Best Practices
- Water deeply around the drip line (the area under the canopy where most feeder roots are) rather than just near the trunk
- Water in the morning to allow roots to absorb moisture before heat of day; avoid wetting leaves in the evening to reduce disease risk
- Apply 2-3 inches of mulch around the base to conserve soil moisture and protect shallow roots from drying out
- Check soil moisture regularly by feeling a few inches below the surface; water when soil feels dry but avoid soggy conditions which can cause fungal infections
In summary, Japanese maples need consistent moisture but not waterlogged soil. Adjust watering frequency based on planting location, weather, and soil drainage to keep the soil evenly moist without overwatering.
