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Paeonia rockii (Rock's tree peony )

Beginner
skill rating
1 hour care
per year
2.2m
Max height
2.2m
Max spread
10-20 years
To maturity
Low
Toxicity

Plant details

Botanical name

Paeonia rockii

Other names

Rock's tree peony , Rock's peony, Paeonia suffruticosa subsp. rockii, Rock's variety peony

Genus

Paeonia Paeonia

Species

P. rockii - P. rockii is an upright or spreading, sparsely branched, deciduous shrub with pinnate, mid- to dark green leaves, sometime blue-green, each with narrowly ovate, pointed leaflets and, in late spring and early summer, white, often pink-flushed flowers with prominent yellow anthers and heart-shaped petals, each with a prominent maroon mark at the base.


Paeonia rockii is: Deciduous

Fragrance

Flowers are fragrant.

Habit

Spreading, Upright

Toxicity

All parts may cause discomfort if ingested.

Flower

White, Flushed pink in Summer

Foliage

Green in Spring; Green in Summer

How to care

Watch out for

Specific pests

Eelworms (leaf and bud) , Swift moth larvae Eelworms (leaf and bud) , Swift moth larvae

Grey mould , Honey fungus , Peony wilt Grey mould , Honey fungus , Peony wilt

General care

Propagation

Seed may take 2-3 years to germinate.

Propagation methods

Grafting, Seed, Semi-ripe cuttings


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Where to grow

Paeonia rockii (Rock's tree peony ) will reach a height of 2.2m and a spread of 2.2m after 10-20 years.

Suggested uses

City, Cottage/Informal, Flower Arranging, Beds and borders, Low Maintenance

Cultivation

Grow in fertile, humus-rich, moist but well-drained soil in full sun or partial shade. Shelter from cold, drying winds.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Paeonia rockii

Other names

Rock's tree peony , Rock's peony, Paeonia suffruticosa subsp. rockii, Rock's variety peony

Genus

Paeonia Paeonia

Species

P. rockii - P. rockii is an upright or spreading, sparsely branched, deciduous shrub with pinnate, mid- to dark green leaves, sometime blue-green, each with narrowly ovate, pointed leaflets and, in late spring and early summer, white, often pink-flushed flowers with prominent yellow anthers and heart-shaped petals, each with a prominent maroon mark at the base.

Foliage

Deciduous

Fragrance

Flowers are fragrant.

Habit

Spreading, Upright

Toxicity

All parts may cause discomfort if ingested.


Colour

Flower

White, Flushed pink in Summer

Foliage

Green in Spring; Green in Summer


How to care

Watch out for

Specific pests

Eelworms (leaf and bud) , Swift moth larvae

Specific diseases

Grey mould , Honey fungus , Peony wilt

General care

Propagation

Seed may take 2-3 years to germinate.

Propagation methods

Grafting, Seed, Semi-ripe cuttings


Monthly care advice


Where to grow

Paeonia rockii (Rock's tree peony ) will reach a height of 2.2m and a spread of 2.2m after 10-20 years.

Suggested uses

City, Cottage/Informal, Flower Arranging, Beds and borders, Low Maintenance

Cultivation

Grow in fertile, humus-rich, moist but well-drained soil in full sun or partial shade. Shelter from cold, drying winds.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 8, Zone 7, Zone 6, Zone 5

Defra's Risk register #1

Plant name

Paeonia rockii (Rock's tree peony )

Common pest name

Ash yellows

Scientific pest name

Candidatus Phytoplasma fraxini

Type

Phytoplasma

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Pathogen causing phytoplasma disease of certain tree species in the Americas. EU regulation already provides some mitigation against the risk of introduction; but could be further strengthened.

Defra's Risk register #2

Plant name

Paeonia rockii (Rock's tree peony )

Common pest name

Stunt nematode; Tobacco stunt nematode

Scientific pest name

Tylenchorhynchus claytoni

Type

Nematode

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

1

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Polyphagous nematode pest already present in UK; particularly damaging to Azaleas at present; but could move into crops such as maize and forestry crops (Pinus) in the longer term. Need to raise awareness amongst relevant sectors.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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Paeonia rockii Zi Ban Bai (29/10/2010)

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

GARDENS WITH THIS PLANT

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