How to Plant and Care for an Acer in a Pot
Acers, or Japanese maples, are beautiful trees that are well-suited for growing in pots. They are slow growing and have stunning foliage that changes color with the seasons.
Choosing the Right Pot and Soil
When choosing a pot for your acer, select one that is large enough to accommodate the tree’s roots. The pot should also have drainage holes to prevent the soil from becoming waterlogged.
Acers prefer nutrient-rich, moist but well-drained soil. A good potting mix for acers is a 50:50 mix of John Innes No. 3 compost and ericaceous compost.
Planting Your Acer
- Fill the pot halfway with potting mix.
- Remove the acer from its container and place it in the center of the pot.
- Fill in around the plant with fresh potting mix and firm it in gently.
- Water the acer well.
- Top the compost with a layer of decorative mulch, such as pebbles or crushed shells.
Caring for Your Acer
Acers are relatively low-maintenance trees, but they do require some basic care to thrive.
Watering: Acers need regular watering, especially during the summer months. Allow the top inch of soil to dry out before watering again.
Fertilizing: Fertilize your acer monthly during the growing season with a balanced liquid fertilizer.
Pruning: Acers can be pruned to shape and control their growth. Prune in the late winter or early spring, before new growth begins.
Overwintering: Acers are hardy to USDA plant hardiness zones 5-8. If you live in a colder climate, you will need to overwinter your acer in a protected location, such as a garage or shed.
Troubleshooting
My potted acer is dying. Why?
There are a few reasons why your potted acer may be dying.
- Overwatering: Acers do not like to sit in waterlogged soil. Make sure the pot has drainage holes and allow the top inch of soil to dry out before watering again.
- Underwatering: Acers also do not like to dry out completely. Water your acer regularly, especially during the summer months.
- Nutrient deficiency: Acers need regular fertilization to thrive. Fertilize your acer monthly during the growing season with a balanced liquid fertilizer.
- Pests and diseases: Acers are susceptible to a few pests and diseases, such as aphids, scale, and powdery mildew. Treat any infestations promptly with an appropriate pesticide or fungicide.
Conclusion
Acers are beautiful and rewarding trees to grow in pots. By following these tips, you can keep your acer healthy and happy for years to come.
