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Deciduous hybrid small tree with white flowers and red fall colour
Rosaceae
Hybrid small tree with white flowers and lasting red fall colour
Princess Diana serviceberry
Amelanchier × grandiflora ‘Princess Diana’
Princess Diana serviceberry is an upright rounded hybrid small tree available in single-trunk or multi-stemmed form. Yellow-green buds produce numerous white spring flowers. Pale-bronze young foliage turns green in summer, then vivid long-lasting red with yellow and orange accents in fall. Purple-blue to blue-black fruit is edible and attracts birds. Hardy to Zone 4, the tree reaches approximately 6 to 7.5 m high by 4.5 to 6 m wide (20 to 25 ft × 15 to 20 ft). It prefers full sun or partial shade and cool, well-drained soil. Noted leaf-spot resistance supports a clean ornamental display. For best results, inspect soil, foliage, and growth regularly.
200 cm; 250 cm; 50 mm
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- Quantity
- 200 cm; 250 cm; 50 mm
- Exposure
- Full sun to partial shade; best bloom and fall colour in full sun
- Hardiness
- Zone 4
Discover the plant
Common namePrincess Diana serviceberry; Princess Diana apple serviceberry
FamilyRosaceae
GenusAmelanchier
Species× grandiflora
CultivarPrincess Diana
TypeDeciduous hybrid small tree with white flowers and red fall colour
Botanical nameAmelanchier × grandiflora ‘Princess Diana’
Princess Diana serviceberry (Amelanchier × grandiflora ‘Princess Diana’) is a hybrid small tree valued for vivid, long-lasting red fall colour. Yellow-green flower buds produce numerous white blossoms in spring, followed by edible purple-blue to blue-black fruit in early summer. Pale-bronze young foliage turns green before developing red, yellow, and orange shades. Available in single-trunk or multi-stemmed form, this cultivar develops an upright rounded crown. Hardy to Zone 4, it reaches approximately 6 to 7.5 m high by 4.5 to 6 m wide (20 to 25 ft × 15 to 20 ft), creating a refined four-season specimen for residential landscapes.
Plant ‘Princess Diana’ in full sun or partial shade and cool, slightly acidic to neutral, well-drained soil. Full sun encourages bloom, fruit production, and the best fall colour. Dig a hole as deep as the root ball and approximately twice as wide, set the root flare level with the soil, and water slowly. Allow 4.5 to 6 m (15 to 20 ft) between trees so crowns can develop. Spread 5 to 8 cm (2 to 3 in) of mulch without touching the trunk. Even moisture during the first two seasons supports establishment, but avoid stagnant water and severe compaction.
Use ‘Princess Diana’ as a specimen tree, in an entrance, beside a patio, in a loose hedge, or in a bird-friendly garden. Flowers support pollinators, and fruit feeds wildlife; a few ripe fruits may also be harvested. Prune lightly during dormancy or after flowering to remove dead, crossing, or diseased wood and maintain the selected structure. This cultivar is noted for good resistance to leaf spot, although rust, powdery mildew, and fire blight can still occur. Good air circulation, irrigation directed toward the soil, and prompt removal of affected shoots reduce risks. Smooth grey bark and fine branching extend interest into winter.
Planting guide
From planting to establishment.
Spacing / density
Space trees 4.5 to 6 m (15 to 20 ft) apart to allow crown development. In a loose hedge or naturalized screen, spacing of 3.5 to 4.5 m (12 to 15 ft) creates a closer grouping when good air circulation is preserved. Measure from the centre of each trunk and account for buildings, wires, and property boundaries.
Best planting time
In spring after the soil thaws, or in early fall at least six weeks before persistent frost
Propagation
Softwood cuttings or grafting to preserve the ‘Princess Diana’ cultivar faithfully; seed does not reproduce the selection identically
Soil and care
The right care,at the right time.
Soil pH
Slightly acidic to neutral, ideally approximately 5.0 to 7.0
Minimum temperature
Approximately -34 °C (-29 °F), Zone 4
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
7 m (23 ft)
Width / spread
3 m (10 feet)
Flower color
White
Foliage color
Pale bronze on emergence, green in summer, lasting vivid red with yellow and orange accents in fall
Foliage type
Deciduous; simple, oval, finely toothed, glossy leaves
Growth rate
Moderate
Growth habit
Upright and rounded; available in single-trunk or multi-stemmed form
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
Flowers produce small round pome fruits that change from red to purple-black in early summer. Sweet flesh resembles blueberries and can be eaten fresh or cooked. Birds harvest fruit quickly; netting installed after flowering can protect part of the crop. Seed does not reproduce the ‘Princess Diana’ cultivar reliably, so vegetative propagation is required. For best results, inspect soil, foliage, and growth regularly.
Harvest
Harvest fruit in early summer when it is fully purple-black, soft, and sweet. Pick clusters by hand early in the morning and chill fruit promptly. It keeps for several days in the refrigerator or can be frozen in a single layer before transfer to a container. Leave part of the crop for birds to support local wildlife.
Garden associations
In goodcompany.
Companion plants
Pair ‘Princess Diana’ with blueberries, hazelnuts, cranberries where soil suits them, viburnums, dogwoods, and small garden-origin hybrid conifers. Beneath the light crown, ferns, columbines, asters, wild strawberries, and sedges can form a lower layer. Choose plants that prefer cool well-drained soil and leave open space around the trunk. Avoid aggressive groundcovers that interfere with watering and inspection of the root flare. 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.
Plants to avoid
Avoid stagnant water, severe compaction, prolonged drought, excess nitrogen, and repeated road-salt deposits. Rust, powdery mildew, leaf spots, cankers, and fire blight can occur. Encourage good air circulation, irrigate at soil level, and remove diseased shoots promptly with disinfected tools. Fruit may rot in very wet weather, and birds often consume the crop before full maturity. Use netting only when it cannot trap wildlife. For best results, inspect soil, foliage, and growth regularly. This attention supports a healthy, productive, lasting tree.
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 Princess Diana serviceberry grow?
‘Princess Diana’ generally reaches approximately 6 to 7.5 m high by 4.5 to 6 m wide (20 to 25 ft × 15 to 20 ft). Its habit is upright, and the crown becomes rounded with age. Keep approximately 3 m (10 ft) between the trunk and a building or boundary the branches cannot cross, and avoid overhead wires. In a loose hedge, space trees 4.5 to 6 m (15 to 20 ft) apart so crowns can develop while retaining good air circulation. Pruning should not be used to force the tree into a position that is too narrow for its mature size.
Is Princess Diana serviceberry fruit edible?
Yes. Small fruit changes from red to blue-black after flowering and becomes edible when dark, soft, and easy to detach. It can be eaten fresh or cooked, but ‘Princess Diana’ is selected mainly for white bloom and ornamental value, so the crop may be lighter than on a fruit cultivar. Full sun, pollinator visits, and even moisture during fruit development support production. Birds may take fruit quickly. If you want a harvest, install netting only after flowering so pollinators can reach the blossoms. Remove netting promptly after harvest to prevent wildlife entanglement. For best results, inspect soil, foliage, and growth regularly.
What distinguishes Princess Diana serviceberry?
‘Princess Diana’ is distinguished mainly by vivid, long-lasting red fall colour and good resistance to leaf spot. Yellow-green buds produce numerous white flowers in spring. Fruit later becomes purple-blue to blue-black and is edible, although the tree is grown mainly as an ornamental. Foliage emerges pale bronze, turns green in summer, and then develops red, yellow, and orange shades. The cultivar can be trained in single-trunk or multi-stemmed form. For the best fall colour, plant it in full sun and cool, well-drained soil, and avoid severe pruning that stimulates weak growth. Its upright rounded crown provides a refined specimen for residential gardens.
When and how should Princess Diana be pruned?
Prune lightly during dormancy or just after flowering. First remove dead, broken, crossing, or diseased branches, then shoots that interfere with the chosen single- or multi-stemmed form. Avoid shortening every branch to the same height because this reduces bloom and creates a dense crown. To raise the crown gradually, remove only a few low branches each year and preserve each branch collar. Do not remove more than one-quarter of the crown in one season. When fire blight appears, cut affected wood during dry weather and disinfect tools between cuts. Avoid severe pruning that stimulates tender shoots vulnerable to disease. For best results, inspect soil, foliage, and growth regularly.
Does Princess Diana prefer full sun or partial shade?
‘Princess Diana’ grows in full sun or partial shade, but a sunny exposure generally encourages heavier bloom, a denser crown, and brighter fall colour. Partial shade can work when the site receives several hours of direct light and the soil remains well drained. In dense shade, growth may become open and flowering may decline. Cool, slightly acidic to neutral, well-drained soil remains important in either exposure. Water regularly through the first two seasons and during prolonged dry periods afterward. Avoid stagnant water and protect the root zone with mulch, keeping it away from the trunk and visible root flare. For best results, inspect soil, foliage, and growth regularly.
Wildlife and pets
Life,around your plants.
Attracts birds
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.