Growing and Maintaining Itoh Peony

Peony Bartzella Itoh 2018

Itoh Peony Bartzella

HISTORY: After may years of experimentation, Japanese horticulturist, Dr. Toichi Itoh, successfully created seven peony hybrids from a tree peony in 1948, which were known to became the first Itoh peonies. Itoh Peony are derived from a cross breeding between herbaceous and tree peonies, forming a stronger, longer blooming variety over its predecessors. Similar to tree peonies, members of this cultivar have large, long lasting blooms and strong stems that do not require staking. The deeply lobed dark green foliage on a 3-4 foot high by wide plant lasts all summer and into fall, making an attractive addition to the garden. Itoh peonies are also known to be more disease resistant and are not preferred by deer.

Itoh Peony 'Bartzella' in Perennial Border

Itoh Peony ‘Bartzella’ in Perennial Border

GROWING AND MAINTAINING: Itoh peonies prefer to be placed in full sun to partial shade in a rich, well-drained soil. Feed in spring with a low nitrogen fertilizer to promote blooms. Fertilization is not recommended in late summer to fall when the plant is going into dormancy. Once blooms have completed in late spring, Itoh peony can be deadheaded by removing spent flower stalks, leaving its attractive foliage to remain for the rest of the growing season. In autumn, once the foliage turns brown, cut back plants to about 4-6 inches up from the soil level. It is recommended to mulch around the plant to insulate the roots from freezing temperatures. Once spring comes around, your peony will emerge for another growing season. Itoh peony can also be divided in autumn as you would herbaceous peonies.

I discovered this wonderful peony a few years back and have enjoyed its beautiful, sturdy, and disease resistant blooms in the garden. You may find them to be a nice addition as well!

For more gardening tips and design ideas:

A Guide to Northeastern Gardening: Journeys of a Garden Designer Zones 3-9
Landscape Design Combinations

Author:  Lee@Landscape Design By Lee 2018. All Rights Reserved.

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Winter Damaged Hydrangea & Crape Myrtle-How to Treat

Winter Damage to Hydrangea & Crape Myrtle

This past winter has been recorded to be one of the worst for winter damage to foliage of plants in the past 25 years. I have witnessed winter damaged Hydrangea and Crape Myrtle on many properties I have visited and have been getting many inquiries as to how to remedy the damage that has occurred. Chances are that your plants will fully recover so I am passing on this useful information.

hydrangea winter die back

Hydrangea Winter Damage

If your hydrangea are sprouting new growth from the bottom only with no new sprouts on the upper stems and visible shoots on bare wood have a dark dried up appearance then they are not viable. To remedy cut back all dead wood down to where new growth is occurring.  If your variety of hydrangea blooms on old wood you may not get blooms this year but your hydrangea should fully recover.

crape myrtle winter damage

Crape Myrtle Winter Damage

In the case of Crape Myrtles most of them survived but have dead top growth. It is advisable to wait until the end of June/beginning of July to cut back branches to new growth in order to allow the plant to sprout as much new foliage as possible. Other plants showing winter damage besides hydrangea and crape myrtle include butterfly bush and roses.  Use the same practice to remove expired growth.

Butterfly Bush Winter Damage

Butterfly Bush Winter Damage

 Due to the unusually harsh winter plant growth is delayed by approximately two to three weeks this season.   New growth will have a slow start this spring but with some patience and proper care your plants should show full recovery.

  As Always…Happy Gardening!

 Author:  Lee@Landscape Design By Lee, 2014, All Rights Reserved

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