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Amelanchier canadensis 'Glenn Form' (Serviceberry 'Glenn Form')

Intermediate
skill rating
1 hour care
per year
6m
Max height
3m
Max spread
10-20 years
To maturity

Plant details

Botanical name

Amelanchier canadensis 'Glenn Form'

Other names

Serviceberry 'Glenn Form', Grape pear 'Glenn Form', Juneberry 'Glenn Form', Shadbush 'Glenn Form', Shadblow 'Glenn Form', Amelanchier botryapium 'Glenn Form', Amelanchier intermedia 'Glenn Form', Amelanchier oblongifolia 'Glenn Form', Amelanchier canadensis 'Rainbow Pillar'

Genus

Amelanchier Amelanchier

Variety or Cultivar

'Glenn Form' _ 'Glenn Form' is a dense, upright, often suckering, deciduous tree with elliptic to ovate, dark green leaves turning red in autumn and racemes of white flowers in spring followed by blue-black fruit.


Amelanchier canadensis 'Glenn Form' is: Deciduous

Habit

Suckering, Erect, Dense

Flower

White in Spring

Foliage

Dark-green in Spring; Dark-green in Summer; Red in Autumn

How to care

Watch out for

Fireblight Fireblight

General care

Pruning

Pruning group 1

Propagation methods

Seed, Semi-hardwood cuttings


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Where to grow

Amelanchier canadensis 'Glenn Form' (Serviceberry 'Glenn Form') will reach a height of 6m and a spread of 3m after 10-20 years.

Suggested uses

Wildlife, Low Maintenance, Hedging/Screens, Cottage/Informal, Banks and Slopes

Cultivation

Grow in moist but well-drained, acid to neutral soil in sun or partial shade. Autumn leaf colour is best in sun. Does not produce fruit as prolifically as the species.

Soil type

Clay, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

Companion plants

Amelanchier flowers at the same time as spring bulbs. The white flowers are complemented by underplanting blue bulbs.

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

Botanical name

Amelanchier canadensis 'Glenn Form'

Other names

Serviceberry 'Glenn Form', Grape pear 'Glenn Form', Juneberry 'Glenn Form', Shadbush 'Glenn Form', Shadblow 'Glenn Form', Amelanchier botryapium 'Glenn Form', Amelanchier intermedia 'Glenn Form', Amelanchier oblongifolia 'Glenn Form', Amelanchier canadensis 'Rainbow Pillar'

Genus

Amelanchier Amelanchier

Variety or Cultivar

'Glenn Form' _ 'Glenn Form' is a dense, upright, often suckering, deciduous tree with elliptic to ovate, dark green leaves turning red in autumn and racemes of white flowers in spring followed by blue-black fruit.

Foliage

Deciduous

Habit

Suckering, Erect, Dense


Colour

Flower

White in Spring

Foliage

Dark-green in Spring; Dark-green in Summer; Red in Autumn


How to care

Watch out for

Specific diseases

Fireblight

General care

Pruning

Pruning group 1

Propagation methods

Seed, Semi-hardwood cuttings


Monthly care advice


Where to grow

Amelanchier canadensis 'Glenn Form' (Serviceberry 'Glenn Form') will reach a height of 6m and a spread of 3m after 10-20 years.

Suggested uses

Wildlife, Low Maintenance, Hedging/Screens, Cottage/Informal, Banks and Slopes

Cultivation

Grow in moist but well-drained, acid to neutral soil in sun or partial shade. Autumn leaf colour is best in sun. Does not produce fruit as prolifically as the species.

Soil type

Clay, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Amelanchier canadensis 'Glenn Form' (Serviceberry 'Glenn Form')

Common pest name

grape ground pearl

Scientific pest name

Margarodes vitis

Type

Insect

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)

5

General biosecurity comments

Main pathway; Vitis spp. plants for planting; already prohibited. However; further consideration of other pathways is required.

Defra's Risk register #2

Plant name

Amelanchier canadensis 'Glenn Form' (Serviceberry 'Glenn Form')

Common pest name

Round headed apple tree borer

Scientific pest name

Saperda candida

Type

Insect

Current status in UK

Absent

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

3

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

4

General biosecurity comments

American wood boring beetle; single European incursion into a German Island in the Baltic; limited likelihood of introduction into the UK due to small volume of trade and import inspections. Possible EU listing will limit risk further.

Defra's Risk register #3

Plant name

Amelanchier canadensis 'Glenn Form' (Serviceberry 'Glenn Form')

Common pest name

Lance nematode; Nematode; Lance

Scientific pest name

Hoplolaimus spp.

Type

Nematode

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

Nematode species potentially affecting a wide variety of crops; prohibition of soil likely to mitigate risk substantially; keep under review in light of interceptions or findings should they occur in the EU.

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

COMPANION PLANTS

Amelanchier flowers at the same time as spring bulbs. The white flowers are complemented by underplanting blue bulbs.

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


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