Acer palmatum (green)

Adjust the frequency of watering based on the weather conditions, season, and moisture retention of the soil. Regularly check the moisture level by sticking your finger about an inch into the soil.

Plant Acer palmatum in a well-draining soil mixture rich in organic matter. A mix of peat moss, compost, and well-rotted manure or leaf mold works well. The ideal soil pH for Japanese maples is slightly acidic, ranging from 5.5 to 6.5. If necessary, you can amend the soil with sulfur to lower the pH.

Acer palmatum prefers partial shade to filtered sunlight. While it can tolerate some direct sunlight, especially in the morning or evening, prolonged exposure to intense sunlight can scorch the leaves. Ideally, place the tree in a location that receives dappled sunlight or morning sun with afternoon shade. This helps protect the delicate foliage from excessive heat and sunburn.

Pruning Acer palmatum is primarily done for aesthetic purposes or to remove damaged, diseased, or crossing branches. Remove any dead, broken, or diseased branches first. Then, selectively prune to shape the tree, ensuring an open and well-balanced structure. Avoid heavy pruning, as Japanese maples have a graceful, delicate structure that should be maintained.

Apply a balanced, slow-release fertilizer in early spring before new growth begins. Follow the manufacturer's instructions for application rates or use a granular fertilizer with an N-P-K ratio of around 10-10-10.
Avoid excessive fertilization, as it can cause the leaves to burn or the tree to produce weak, leggy growth.

Japanese maples are generally relatively resistant to pests and diseases but may occasionally face some issues.
Common pests include aphids, scale insects, and caterpillars. Regularly inspect the foliage for any signs of infestation, and if necessary, use insecticidal soaps or horticultural oils to control the pests.