How to Plant Japanese Tree Peonies

Japanese tree peonies (Paeonia suffruticosa) are known for their stunning, large, and colorful blossoms. These woody-stemmed shrubs can live for decades and be passed down from generation to generation. Here’s a guide on how to plant Japanese tree peonies and keep them thriving.

Choosing a Location

When planting Japanese tree peonies, it is essential to choose a location that will meet their sunlight, water, and soil requirements. Japanese tree peonies need at least six hours of direct sunlight daily to grow healthy and bloom properly. They prefer well-draining soil with a pH of 6.5-7.5, high in organic matter, and with good air circulation.

Planting Japanese tree peonies near a wall, fence, or other structure can shade them from harsh midday sun, which can be beneficial in extremely hot climates. They can also benefit from mulching to keep the soil moist and cool in the summer.

Planting Process

Japanese tree peonies should be planted in the fall, ideally in October or November, when they are dormant. To plant, dig a hole that is about twice the size of the root ball of the plant, leaving enough space between plants to ensure good air circulation. Mix in some organic matter, such as compost, peat, or aged manure, to the soil before planting to improve soil quality and drainage.

After settling the plant in the hole and backfilling the soil, water it thoroughly to allow the soil to settle around the roots. It will also help remove any air pockets that may have formed. Add additional soil if needed once the water has drained away.

Post-Planting Care

Once planted, Japanese tree peonies need regular care to keep them healthy and thriving. Provide them with a balanced fertilizer, such as a 10-10-10 or 10-20-10 ratio, in the early spring and mid-summer. Be careful not to over-fertilize, as this can lead to more foliage and fewer flowers.

Prune them only lightly, selectively removing dead branches and crossing stems. Avoid pruning back more than a third of the shrub in a single year, as this can reduce the number of flowers produced the next year. Mulching with organic matter can help control weeds and retain moisture while also providing nutrients.

In Conclusion

Japanese tree peonies are a stunning addition to any garden, but proper care is necessary to ensure their longevity and beauty. Remember to choose a suitable location, provide the necessary nutrients and water, and take care not to overdo their pruning. With these tips, your Japanese tree peonies can bloom year after year, bringing a splash of color to your garden each spring.