Woody > Prunus > Prunus x yedoensis > Prunus x yedoensis 'Ivensii'

Family

Rosaceae

Genus

Prunus

Species

x yedoensis

Cultivar

'Ivensii'

Category

Woody

Type

Tree (deciduous)

USDA Hardiness Zone

5

Canadian Hardiness Zone

4 - 6a

RHS Hardiness Zone

H7

Temperature (°C)

(-29) - (-23)

Temperature (°F)

(-20) - (-10)

Height

15 m

Photographs

Description and Growing Information

Flowering Period

Landscape

Beautiful specimen tree, especially suited to urban gardens.

Cultivation

Grow in full sun in a well-drained, moisture-retentive soil, avoiding soils that are overly rich.

Shape

Small, broadly upright tree.

Growth

Medium

Pests

Susceptible to a number of pests and diseases, including aphids, silver leaf (Chondrostereum purpureum), witches brooms' and leaf spots. Plum Pox: Symptoms may be confused with other diseases/disorders such as nutrient deficiencies or pesticide injuries. PPV symptoms can occur on leaves, flowers and/or fruit. Faint yellow rings or lines may be found on the leaves. PPV generally does not cause plant mortality however, can reduce the plant productivity and longevity. How to Reduce the Spread and Impact of PPV: 1. Propagate vulnerable Prunus trees and shrubs outside of the affected area a. Isolation is important to protect clean plants from future spread of the disease. b. Propagating and growing vulnerable plants away from the virus-infected area reduce the likelihood of the disease spreading any further. This should be as far away from the quarantined area and any potential sources of the virus. 2. Propagate Prunus plants with virus-free Budwood and Rootstock from virus tested mother trees a. This eliminates the propagation link for viral diseases. 3. Inspect vulnerable Prunus for symptoms a. All Prunus shrubs and trees should be visually inspected for symptoms at lease twice per year and conducted by trained personnel familiar with the virus. b. Any plants found to be infected should not be moved or sold and must be reported to the Canadian Food Inspection Agency immediately. c. Inspections should not be conducted in periods of hot weather (temperatures over 30˚C). 4. Manage aphid vectors a. Aphids are extremely attracted to suckers (vegetative shoots at the base of the tree), these should be removed to avoid aphid colonization, feeding or migration. 5. Plant tolerant and resistant varieties a. When available, grow plum pox tolerant or resistant Prunus varieties.

Habitat

Horticultural origin.

Bark/Stem Description

Bark is smooth, with main branches arching horizontally and slender, nodding branchlets.

Leaf Description

Leaves grow to 12 cm, are vivid green above and paler and pubescent beneath, with a golden-yellow petiole that has a brick-red pubescence.

Flower Description

Flowers are 2 cm in diameter, pink in bud, opening white, and are notably fragrant.

Fruit Description

Fruit is pea-sized and black.

Notable Specimens

Royal Botanical Gardens, Burlington, Ontario, Canada.

Propagation

Propagate through budding or grafting.

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