Keep the roots moist and shaded until planting. Tree peonies prefer a soil pH of 6.5 to 7.0. They must be planted in a well drained place. Tree peonies are hardy from USDA zone 4-9 Canadian zone 5-10.
Standing water at the roots will kill them. Do not plant close to trees where roots will compete with peony roots for nutrients and water.
The hole should be two feet deep and two feet wide. Plant your tree peony at the same depth as it was planted at our nursery. Any new bud stems should be below the soil level. Mound the earth so that the roots are fully extended. Fill the hole half way with rich garden soil. Water in the plant to prevent air pockets. Fill the rest of the hole, again with
rich garden soil and water.  After the plant has bloomed, it's best to 'dead head' the spent flowers.
In the fall, carefully remove dead leaves. This sanitary procedure will help keep your plants free of botrytis, a common garden disease.
We  suggest using a  fertilizer like 5-10-5 in the spring. Anything that has a higher second number over the first. A natural fertilizer like fish emulsion is excellent also.

             Your tree peonies need to be protected if you have a very cold winter (zone 3-4). Build a wire cage around a tree peony, fill with leaves or hay, then wrap with landscape fabric around the cage. This will let air circulate to the plant, but protect it from the harsh winter. You also can use snow to cover your tree peonies when they are small.

             A three-year or older tree peony plant is usually capable of blooming the season after planting. It may bloom and it may not. There is nothing to worry about if it does not. First year blooms are often not typical of the variety, not nearly as full and beautiful as they will become within a few years of growth. Some varieties may take longer to bloom. Once they are established, you will be rewarded each year with an abundance of beautiful flowers. Tree peonies can live more  than a hundred years if you take good care of them.
 
 

Peonies prefer a well-drained soil with a pH of 6.0 to 7.0. They do not tolerate poorly drained soil. Plants do best in full sunlight, but they will stand a moderate amount of shade.

             Peonies can be planted any time in the fall before the ground is frozen or in the spring. When spring planting it is important to avoid windy situations while the roots develop. Peonies planted in spring sometimes have trouble because the root development does not keep pace with the growth. Space plants 3 to 4 feet apart. Dig a hole large enough to accommodate the root system. A generous amount of compost or well-rotted animal manure is beneficial to peonies. It should be mixed well with soil. Place a layer of soil above the fertilized zone so that roots of the peonies do not come in contact with the manure. Plant peonies with the eyes 2 inches below the soil surface in colder zones and shallower in warm zones with eyes facing upward. Plants placed too deeply sometimes fail to bloom. Fill the hole with soil, tamp firmly and water well.

              Peonies are low maintenance plants. Fertilize your plants lightly with bone meal or a low nitrogen fertilizer such as 5-10-5. The best time to fertilize is in early spring when the stems are about 2 or 3 inches high or after blooming.

            Tree peonies or herbaceous peonies can be planted under full sun or part sun. It requires at least 4 to 5 hours of sun light daily. In areas where it is very hot in the spring, during the blooming season, the heat causes the flowers to wilt and drop fast. In this case, it is better to plant it in a semi-shady area. Good drainage is essential. In a lowland during the summer where accumulated rain water can cause root rot, it may be fatal. However, you can provide better drainage by planting it on a gentle slope or in a raised flower bed. Avoid planting any peonies near large trees which may draw the necessary nutrients away from the peonies.