The ‘Jitsu Getsu Nishiki’ Tree Peony is a prized ornamental plant. Its striking appearance and long lifespan make it a sought-after addition for vibrant color in any garden. This cultivar’s impressive blooms and structural presence create a captivating focal point.
Distinctive Features of Jitsu Getsu Nishiki
The ‘Jitsu Getsu Nishiki’ Tree Peony (Paeonia suffruticosa ‘Shin-Jitsugetsunishiki’) is known for its unique floral characteristics. Its large, semi-double, bowl-shaped flowers measure 7 to 8 inches across. The blooms feature vibrant scarlet-red petals, often rimmed in creamy-white or exhibiting vertical white stripes. A central cluster of bright golden stamens adds to their appeal. These flowers emerge in mid to late spring, offering a display of color.
The foliage consists of attractive, medium green leaves, deeply divided into oval to lance-shaped leaflets. These leaves provide a rich backdrop for the blossoms and remain appealing throughout the growing season, though they typically do not develop significant fall color. The shrub reaches a mature height of 3 to 6 feet and can spread up to 5 feet, with an upright, spreading growth habit. It is a slow-growing shrub, adding 1 to 6 inches of new woody growth annually, and can live for 50 years or more under favorable conditions.
Planting Your Tree Peony for Success
Proper site selection is the initial step for establishing a ‘Jitsu Getsu Nishiki’ Tree Peony. These plants thrive in full sun to partial shade, ideally with morning sun and afternoon shade to prolong flower life, especially in hotter climates. Protection from strong winds prevents damage to flowers and foliage. Tree peonies prefer well-drained soil rich in organic matter, with a neutral to slightly alkaline pH (6.5-7.5).
When preparing the planting site, dig a hole at least 2 feet deep and 1 foot wide to accommodate the root system and ensure drainage. Amending the soil with compost or well-rotted manure improves fertility, moisture retention, and drainage. For grafted tree peonies, plant them deeply so the graft union, visible as a slight bulge near the stem base, is 3 to 6 inches below the soil surface. This deep planting encourages the tree peony to develop its own root system, leading to a more robust plant. After placing the plant, backfill the hole, gently pressing the soil to remove air pockets, and water thoroughly to settle the soil.
Essential Care for Vigorous Growth
Once established, ‘Jitsu Getsu Nishiki’ Tree Peonies require consistent care for vigorous growth and abundant blooms. Newly planted peonies need about an inch of water per week, supplied through rainfall or supplemental watering. During the first two growing seasons, ensure the plant receives a good soaking every two weeks to help the root system establish. Mature plants require deep watering every 10 to 14 days, especially during dry periods, allowing the soil to dry out between waterings to prevent root rot. Watering in the early morning allows foliage to dry, reducing fungal disease risk.
Fertilization supports plant health and flowering. Apply a balanced slow-release fertilizer or compost in early spring as new growth begins to provide necessary nutrients. A handful of commercial fertilizer or bone meal applied to the root area, 6 to 18 inches from the crown, after blooming in early summer can also be beneficial as the plant develops new buds for the following season. Avoid over-fertilization, as it can hinder blooming. Maintaining good soil health through annual organic matter additions helps sustain fertility and structure.
Seasonal Pruning and Winter Hardiness
Seasonal pruning for ‘Jitsu Getsu Nishiki’ Tree Peonies is minimal but important for plant health and appearance. The primary task involves removing dead, diseased, or crossing branches. This is best done in late winter or early spring, as new growth begins and buds swell, making dead wood easier to identify. Cut dead stems back to a live bud or the plant’s base.
Tree peonies are hardy, thriving in USDA Zones 4 through 8, but winter protection benefits young plants or those in colder climates. Apply a thick layer of mulch, such as pine needles, straw, or wood shavings, around the root zone in late fall to insulate the soil and protect roots from extreme cold and freeze-thaw cycles. In exposed locations or harsh winters, wrapping the plant with burlap or similar breathable material shields woody stems and flower buds from damaging winds and frost. Remove winter protection in early to mid-April as temperatures warm.
Troubleshooting Common Tree Peony Issues
Tree peonies are robust, but issues can arise. A common problem is a lack of blooms, often stemming from incorrect planting depth, especially if the graft union is not buried deeply enough. Proper planting depth encourages the plant’s own root system, supporting flowering. Another cause for poor blooming can be competition from nearby tree or shrub roots for nutrients and water.
Fungal diseases, such as Botrytis blight, can affect tree peonies, appearing as black areas on foliage, buds, or stems. Good air circulation helps prevent such issues. If symptoms appear, promptly remove and dispose of affected plant parts.
Yellowing leaves can indicate nutrient deficiencies or improper watering, especially if the soil is waterlogged or too dry. Stunted growth may also occur if the plant is not receiving sufficient water or has root competition. Regular monitoring helps maintain the health and vigor of your ‘Jitsu Getsu Nishiki’ Tree Peony.