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Narrow upright multi-stemmed deciduous shrub
Rosaceae
Narrow vertical shrub with flowers, edible fruit, and fall colour
Obelisk serviceberry
Amelanchier alnifolia ‘Obelisk’
The cultivar <em>Amelanchier alnifolia</em> ‘Obelisk’, also marketed as Standing Ovation™, forms a uniform multi-stemmed column approximately 4.3 to 4.6 m high by 1.2 m wide (14 to 15 ft × 4 ft), making it ideal for narrow spaces. Abundant white flowers appear in spring and may be followed by edible purple-black fruit in June. Almost-round leaves are dark green in summer and turn red-orange in fall. Hardy to Zone 2, this serviceberry prefers full sun or partial shade and cool, fertile, well-drained soil. It works as a vertical accent, screen, narrow hedge, or focal point. For best results, inspect soil, foliage, and growth regularly.
175 cm; 200 cm; 250 cm
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- Quantity
- 175 cm; 200 cm; 250 cm
- Exposure
- Full sun to partial shade; densest habit, bloom, and fall colour in full sun
- Hardiness
- Zone 2
Discover the plant
Common nameObelisk serviceberry; Obelisk Saskatoon serviceberry; Standing Ovation™ serviceberry
FamilyRosaceae
GenusAmelanchier
Speciesalnifolia
CultivarObelisk
TypeNarrow upright multi-stemmed deciduous shrub
Botanical nameAmelanchier alnifolia ‘Obelisk’
Obelisk serviceberry (Amelanchier alnifolia ‘Obelisk’) is a narrow upright selection ideal where available width is limited. Multiple stems form a uniform oval column approximately 4.3 to 4.6 m high and only 1.2 m wide (14 to 15 ft × 4 ft). In spring, abundant white flowers cover the branches before or as almost-round leaves emerge. Edible purple-black fruit may follow in June, but production is generally lighter than on cultivars selected primarily for harvest. Dark-green foliage turns red and orange in fall. Hardy to Zone 2, this shrub retains a structured outline in winter and provides four-season vertical interest.
Plant Obelisk in full sun or partial shade and cool, fertile, well-drained soil. Full sun encourages dense growth, abundant bloom, and brighter fall colour. Dig a hole as deep as the root ball and twice as wide, set the root flare level with the soil, and water slowly. For a narrow hedge, space shrubs 1 to 1.2 m (3 to 4 ft) apart; as distinct specimens, allow approximately 1.5 m (5 ft). Spread 5 to 8 cm (2 to 3 in) of mulch without touching the stems. Maintain even moisture through the first two seasons, then irrigate during prolonged dry periods.
Use Obelisk as a vertical accent, narrow screen, naturally formal hedge, or focal point in a small garden. Its uniform habit suits positions near a patio, along an entrance, or between areas where a wider shrub would be intrusive. Prune lightly, mainly removing dead, broken, crossing, or diseased wood and suckers that widen the base beyond the planned space. Flowers support pollinators, while fruit can feed birds or be harvested when purple-black and soft. Watch for rust, leaf spots, powdery mildew, and fire blight. Good air circulation and irrigation directed toward the soil help prevent problems.
Planting guide
From planting to establishment.
Spacing / density
Space shrubs 1 to 1.2 m (3 to 4 ft) apart for a continuous narrow hedge. As distinct accents, allow approximately 1.5 m (5 ft) between centres. Keep at least 60 cm (2 ft) from a wall or fence to support air circulation and maintenance access.
Best planting time
In spring after the soil thaws, or in early fall at least six weeks before persistent frost
Propagation
Cuttings or tissue culture to preserve the ‘Obelisk’ cultivar faithfully; seed does not reproduce it identically
Soil and care
The right care,at the right time.
Soil pH
Slightly acidic to neutral, ideally approximately 5.5 to 7.5
Minimum temperature
Approximately -40 °C (-40 °F), Zone 2
Care level
Low to moderate
Drought tolerance
Yes
Watering
Water deeply once or twice weekly during the first season when rainfall is insufficient, then adjust frequency to weather and drainage. Soil should remain cool without becoming waterlogged. An established tree tolerates moderate drought, but irrigation during bloom, fruit development, and prolonged heat supports vigour. Direct water toward the root zone rather than foliage to limit disease. Check moisture beneath mulch before watering again.
Soil type
Cool, fertile, well-drained soil with loamy, sandy, or loosened clay texture is suitable. Slightly acidic to neutral conditions support vigour and nutrient availability. The tree adapts to several soils after establishment, but prolonged drought reduces fruiting and may scorch leaves. Stagnant water, severe compaction, and repeated salt deposits increase stress and disease risk. For best results, inspect soil, foliage, and growth regularly.
Fertilization
Fertilizer is generally unnecessary in fertile soil. In spring, spread a thin layer of mature compost over the root zone without touching the trunk. When a soil test identifies a deficiency, apply a balanced slow-release fertilizer according to its label. Avoid excess nitrogen because it encourages tender shoots, may reduce fruiting, and can increase susceptibility to fire blight. For best results, inspect soil, foliage, and growth regularly.
Moisture
Moderate and even; cool soil without stagnant water
Seasonal care
In spring, inspect bark and remove dead, crossing, or damaged branches before budbreak. White clusters appear early; avoid broad-spectrum insecticides during bloom to protect bees and butterflies. After flowering, prune only lightly because buds form on the previous season’s wood. In early summer, monitor ripening fruit and harvest when it becomes purple-black. Irrigate during dry periods to limit premature fruit drop. In summer, watch for rust, powdery mildew, leaf spots, or fire blight; remove affected shoots with disinfected tools and avoid wetting foliage. In fall, enjoy orange-red colour, renew mulch without piling it against the trunk, and water until freeze-up when soil remains dry. In winter, protect the trunk from rodents and avoid piling salt-laden snow over the root zone. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree.
Container growing
A garden,within reach.
Recommended pot size
At least 75 to 100 L (20 to 25 US gal) for temporary culture
Container culture is best limited to young trees for a temporary period. Use a stable pot holding at least 75 to 100 L (20 to 25 US gal) with numerous holes and a structured well-drained mix. Water regularly, protect the root ball from freeze-thaw cycles, and transplant into the ground before roots become strongly circling.
Bloom and dimensions
Its place,in your garden.
Mature height
4 to 5 m (13 to 16 feet)
Width / spread
3 m (10 feet)
Flower color
White
Foliage color
Dark green in summer, red and orange in fall
Foliage type
Deciduous; simple, oval, finely toothed, glossy leaves
Growth rate
Moderate
Growth habit
Narrow, upright, multi-stemmed, uniform, and nearly columnar
Fragrance
Light floral fragrance
Bloom period
Numerous five-petalled white flowers open in slightly drooping clusters in early spring, before or as leaves unfold. Light fragrance and nectar attract bees, butterflies, and other pollinators. Bloom is generally more abundant in full sun. Protect flowers from insecticide sprays to support pollination and good fruit set. The white display contrasts with bronze-purple emerging foliage. For best results, inspect soil, foliage, and growth regularly.
Fruiting
Edible purple-black fruit may follow the flowers and ripen in June or early summer. Production is generally secondary and can be light compared with cultivars selected for orchards. Birds take ripe fruit quickly. Harvest only when berries are fully dark and soft, then eat them fresh or cooked. For best results, inspect soil, foliage, and growth regularly. For best results, inspect soil, foliage, and growth regularly.
Harvest
Harvest fruit in June or early summer when it becomes purple-black, soft, and easy to detach. Quantity varies with bloom, pollination, exposure, and shrub age. Pick by hand, chill promptly, and leave part of the crop for birds. This selection is primarily ornamental, so a light harvest is normal.
Garden associations
In goodcompany.
Companion plants
Pair Obelisk with dwarf conifers, compact hydrangeas, viburnums, spireas, hardy geraniums, columbines, asters, and sedges. Choose low or moderately broad plants that do not obscure its vertical outline. Keep the root flare visible and maintain access for watering, inspection, and stem pruning. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, structured, lasting shrub. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, structured, lasting shrub. For best results, inspect soil, foliage, and growth regularly.
Plants to avoid
Avoid stagnant water, severe compaction, dense shade, and repeated pruning that cuts every shoot. Rust, leaf spots, powdery mildew, and fire blight can occur. Irrigate at soil level, maintain good air circulation, and remove affected shoots promptly with clean tools. Repeated road-salt deposits can damage roots and foliage. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, structured, lasting shrub. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, structured, lasting shrub.
Recipe idea
From the gardento your plate.
Edible parts
Ripe purple-black fruit, fresh or cooked; remove stems before preparation
For a simple compote, combine 500 ml (2 cups) of washed serviceberries with 30 to 45 ml (2 to 3 tbsp) maple syrup and 15 ml (1 tbsp) lemon juice. Simmer gently for 10 to 15 minutes, stirring until fruit bursts. Serve over yogurt, pancakes, or ice cream, or freeze in small portions.
Frequently asked questions
Your questions,answered.
How large does Obelisk serviceberry grow?
Obelisk generally reaches approximately 4.3 to 4.6 m high and only 1.2 m wide (14 to 15 ft × 4 ft). Multiple stems form a uniform oval column that maintains a narrow footprint. For a continuous hedge or screen, space shrubs 1 to 1.2 m (3 to 4 ft) apart. As distinct accents, allow approximately 1.5 m (5 ft). Keep at least 60 cm (2 ft) from a wall or fence to support air circulation, watering, and pruning access. Avoid overhead wires because the shrub becomes relatively tall. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, structured, lasting shrub.
Is Obelisk serviceberry fruit edible?
Yes. Edible purple-black fruit may ripen in June or early summer after the white flowers. Eat it when fully dark, soft, and easy to detach. Its flavour resembles other serviceberries, and it can be enjoyed fresh or cooked. Obelisk was selected primarily for its narrow uniform habit, so its crop is often lighter and less consistent than that of fruit cultivars. Full sun, pollinator activity, and even moisture during bloom and fruit enlargement support fruiting. Birds may take berries before full maturity, especially when only a few clusters are present. For best results, inspect soil, foliage, and growth regularly. For best results, inspect soil, foliage, and growth regularly.
Does Obelisk work for a narrow hedge?
Yes. Its mature width of approximately 1.2 m (4 ft) and upright multi-stemmed habit make it an excellent narrow screen. Space plants 1 to 1.2 m (3 to 4 ft) apart so crowns meet without becoming overly crowded. Maintain access on at least one side for watering and removal of damaged wood. Avoid shearing the entire surface like a cedar hedge; instead select stems that extend beyond the natural profile. A sunny exposure produces denser growth. Allow for its height of 4.3 to 4.6 m (14 to 15 ft) near wires or windows. For best results, inspect soil, foliage, and growth regularly.
When and how should Obelisk be pruned?
Prune lightly after flowering or during dormancy. First remove dead, broken, crossing, or diseased stems, then suckers that widen the base beyond the planned space. Retain well-spaced vertical stems that form the natural column. Avoid shortening every branch to the same height because this creates a dense surface, reduces bloom, and distorts the oval top. To renew an older shrub, cut one or two ageing stems at ground level and allow a well-placed young shoot to replace them. Do not remove more than one-quarter of the total mass in a single year. For best results, inspect soil, foliage, and growth regularly.
Why is Obelisk widening at the base?
Like other alder-leaved serviceberries, Obelisk can produce suckers from roots or the base. They are normal, but some extend beyond the narrow column. To maintain the planned width, cut unwanted suckers at ground level while young. Do not pull them forcefully because this may damage main roots. Retain several well-positioned vertical shoots to replace older stems gradually. Excess nitrogen or severe pruning can stimulate more shoots. Use moderate fertilization, keep the root flare visible, and avoid injuring roots during bed maintenance. Regular observation makes small corrections easier than removing established stems later. For best results, inspect soil, foliage, and growth regularly.
Wildlife and pets
Life,around your plants.
Attracts birds
Yes
Native plant
Yes
Supporting wildlife
Flowers provide nectar and pollen for bees, butterflies, and other insects. Fruit feeds songbirds, grouse, and small mammals. Foliage hosts certain caterpillars, including viceroy and red-spotted purple butterflies. Leave part of the crop on the tree and avoid broad-spectrum insecticides during bloom. For best results, inspect soil, foliage, and growth regularly.