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Banksia integrifolia 'Sentinel'

Banksia integrifolia 'Sentinel'

Evergreen · Full Sun

Mature size: 4m–6m high × 1.5m–2m wide

  • Evergreen
  • Full Sun
  • Mature height4m–6m
  • Mature width1.5m–2m
  • Frost Tolerant
  • Flowers
Compact upright Coast Banksia reaching just 5m. Silver foliage, golden flower spikes, salt and wind tolerant. Ideal for small gardens. Buy online Australia.About ↘

Most loved for its narrow upright habit, silver-backed foliage, and cylindrical golden flower spikes that provide striking colour and attract wildlife.

Regular price $200.00
Sale price $200.00 Regular price
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Pot size
Available batches
Size: 30cm
Current height guide
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Pot size
30cm

Approximate only. Minimum height important? Confirm with us.

Height guide & disclaimer

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you must confirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

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Size / batchEachQuantity
30cmApprox. height: 0.7m - 1.2m Approx.$200.00
40cm/45L - Pre Order December 26Approx. height: Enquire for current heights$340.00
100L - September Batch - Pre OrderApprox. height: 1.5m - 2m Approx.$760.00
200LApprox. height: Enquire for current heights$1,350.00

Height guide & disclaimer

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you must confirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Subtotal before savings$0.00

See also

Not sure about Coastal Banksia 'Sentinel'? See also Coast Banksia ↗ or Backyard Bliss Lilly Pilly ↗

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    About Banksia integrifolia 'Sentinel'

    Banksia integrifolia 'Sentinel' is a compact upright cultivar of Coast Banksia, selected for narrow gardens and modern landscapes. The dense silvery-green foliage and bold golden cylindrical flower spikes give it the same striking look as standard Coast Banksia in a much smaller footprint, ideal for small gardens and tight planting strips.

    Sentinel grows to 4-6 metres tall and just 2-3 metres wide with a naturally narrow upright form. The compact habit, salt and wind tolerance, and reliable winter-flowering display make it an excellent feature tree, informal screen, or coastal garden specimen for both residential and commercial projects.

    Sentinel is highly coastal tolerant and handles salt spray, sandy soils, and exposed positions with ease. It is also drought tolerant and low maintenance once established, performing well across coastal NSW, VIC and QLD, in full sun with well-drained soil. The flower spikes provide a major nectar source for native honeyeaters, lorikeets, and pollinators through autumn and winter.

    Sentinel or standard Coast Banksia? Sentinel is a compact upright cultivar reaching just 4-6m, ideal for small gardens, narrow planting strips, balcony pots, and modern landscapes. The standard Coast Banksia grows 8-15m with a broad spreading canopy, suited to larger gardens, screening, and feature use in spacious settings. Both share the same silver foliage and golden flower spikes.

    Frequently Asked Questions

    About Banksia integrifolia 'Sentinel'

    How tall does Sentinel Banksia grow?

    Sentinel grows to 4-6 metres tall with a narrow upright form just 2-3 metres wide, making it ideal for small gardens and narrow planting strips.

    How fast does Sentinel grow?

    Sentinel has a moderate growth rate of 40-60cm per year once established.

    What is the difference between Sentinel and standard Coast Banksia?

    Sentinel is a compact upright cultivar of Banksia integrifolia, reaching just 4-6m compared to 8-15m for the standard species. Its narrow form suits small gardens, while standard Coast Banksia is better for larger landscapes and screens.

    Does Sentinel attract birds?

    Yes. The golden cylindrical flower spikes are a major nectar source for native honeyeaters, lorikeets, and pollinators through autumn and winter.

    Is Sentinel suitable for coastal gardens?

    Yes. Sentinel inherits the strong coastal tolerance of Banksia integrifolia and handles salt spray, sandy soils, and exposed coastal positions with ease.

    Can Sentinel grow in pots?

    Yes. Sentinel performs well in large pots (60L+) thanks to its compact narrow form, making it a popular choice for balcony and courtyard planting.

    Is Sentinel an Australian native?

    Yes. Sentinel is a cultivar of Banksia integrifolia, native to the east coast of Australia from QLD through to VIC.

    Key growing information
    Mature height4m to 6m (approx.)
    Mature width1.5m to 2m
    PositionFull Sun
    Growth per year40cm to 70cm per year (approx.)
    FrostFrost Tolerant
    FoliageEvergreen (foliage year round)
    FormUpright · Columnar · Narrow
    UsesScreening or Privacy · Rural Property Planting · Revegetation or Regeneration · Feature Tree · Shade Tree · Windbreak
    Rootball width & depthView dimensions →
    Foliage

    Evergreen (foliage year round)

    Position
    • Full Sun
    Form
    • Upright
    • Columnar
    • Narrow
    Use
    • Screening or Privacy
    • Rural Property Planting
    • Revegetation or Regeneration
    • Feature Tree
    • Shade Tree
    • Windbreak
    Mature height
    4m to 6m (approx.)
    Mature width
    1.5m to 2m
    Banksia integrifolia 'Sentinel'

    Planting Information

    How To Plant Your Banksia integrifolia 'Sentinel'

    Site: Choose a well-drained position in full sun to part shade with room for the canopy to develop.

    Soil preparation: Enrich the planting area with quality compost and aged manure for a strong establishment phase.

    Hole: Dig twice as wide as the root ball and the same depth.

    Planting: Position level with the surrounding soil, backfill gently, firm in, then water deeply to settle the roots.

    Recommended Planting Spacing For Your Banksia integrifolia 'Sentinel'

    Hedging and screening: 1 to 1.5 metres apart for a dense informal screen, or 80 centimetres apart for a tighter formal hedge.

    Feature tree: 3 to 4 metres apart to allow the full canopy and form to develop.

    Avenue planting: 3 metres apart for a uniform soft-textured avenue.

    Banksia integrifolia 'Sentinel' is expected to grow 40cm to 70cm per year (approx.).

    • Medium Growth Rate

    Long Term Care For Your Banksia integrifolia 'Sentinel'

    Watering: Water deeply twice weekly through the first 12 months. Once established, this is drought tolerant and only needs a deep soak during extended dry periods.

    Mulching: Apply a 5 to 7 centimetre layer of organic mulch over the root zone, keeping it 5 centimetres clear of the trunk.

    Pruning: Tip prune in late winter and again in summer to build dense growth. For a formal hedge, light shaping two to three times a year keeps lines crisp.

    Fertilising: Apply a slow-release native blend in early spring and again in autumn. Avoid high-phosphorus formulations as a precaution.

    Pest and disease: Hardy against most pests and diseases. Occasional inspection in warm humid conditions is all that's needed.

    Planting Your Banksia integrifolia 'Sentinel' in Different Soil

    Banksia integrifolia performs best in well-drained sandy loam or loam with a slightly acidic to neutral pH. Adaptable to a wide range of soils when drainage is improved with organic matter.

    Sandy soil: Free-draining and ideal. Mulch well to maintain consistent moisture.

    Clay soil: Improve drainage with gypsum and organic compost before planting.

    Loam: The preferred soil for steady root development and consistent growth.

    pH: Slightly acidic to neutral preferred. Mulch with composted leaf litter to maintain levels naturally.

    Banksia integrifolia 'Sentinel'

    Uses in my Garden

    Uses in my Garden

    • Screening or Privacy
    • Rural Property Planting
    • Revegetation or Regeneration
    • Feature Tree
    • Shade Tree
    • Windbreak

    Banksia integrifolia 'Sentinel' works in an:

    • Australian Native Garden – celebrates local plants with natural character.
    • Coastal Garden – relaxed, seaside feel with hardy, textural plants.
    • Modern Garden – sleek, minimal, and design-led planting.
    • Wildlife Garden – planting to attract birds, bees, and pollinators.
    • Low-maintenance Garden – resilient choices for easy care and year-round appeal.

    Is Banksia integrifolia 'Sentinel' Evergreen or Deciduous?

    Banksia integrifolia 'Sentinel' is an Evergreen (foliage year round) Tree

    Mature Height & Width

    Mature Height: 4m to 6m (approx.)

    Mature Width: 1.5m to 2m

    Banksia integrifolia 'Sentinel' is expected to grow 40cm to 70cm per year (approx.).

    Growth Rate of Banksia integrifolia 'Sentinel'

    Banksia integrifolia 'Sentinel' is expected to grow 40cm to 70cm per year (approx.).

    They are considered to have a:

    • Medium Growth Rate

    Frost Tolerance & Ideal Climate to plant Banksia integrifolia 'Sentinel'

    Is Banksia integrifolia 'Sentinel' frost tolerant?

    Banksia integrifolia 'Sentinel' is Frost Tolerant – Can handle light to moderate frost once established.

    Does Banksia integrifolia 'Sentinel' Flower?

    Banksia integrifolia ‘Sentinel’ produces upright pale yellow flower spikes from autumn through winter. These cylindrical blooms sit clear of the foliage, offering a soft yet distinctive seasonal display and providing valuable nectar during the cooler months.

    Does Banksia integrifolia 'Sentinel' flower?

    • Yes - Flowers

    Flowering Period:

    • Year-Round

    Flower Type:

    • Fluffy

    Flower Colour:

    Yellow

    Is Banksia integrifolia 'Sentinel' an Australian Native Tree?

    Yes

    Banksia integrifolia 'Sentinel' is Native to Derived from Banksia integrifolia, native to the east coast of Australia from Queensland to Victoria. ‘Sentinel’ is a selected cultivar bred for its slim form and adaptability to urban and coastal planting.

    What is the Wildlife Value of Banksia integrifolia 'Sentinel' ?

    Its nectar-rich flowers attract honeyeaters, native bees, butterflies and beetles, while the dense foliage offers shelter for small birds. This combination supports pollinator activity year-round and contributes strongly to garden biodiversity.

    How much Sunlight does Banksia integrifolia 'Sentinel' need?

    Banksia integrifolia 'Sentinel' will thrive best in:

    • Full Sun

    Preferred Soil?

    Banksia integrifolia ‘Sentinel’ performs best in well-drained sandy or loam soils and prefers slightly acidic to neutral conditions. It is sensitive to waterlogging and may struggle in heavy clay unless significantly improved with organic matter and coarse material to enhance drainage. Keep soil evenly moist during establishment, then reduce watering as the tree matures and develops excellent drought resilience.

    Is Banksia integrifolia 'Sentinel' Drought Tolerant?

    Is Banksia integrifolia 'Sentinel' Drought tolerant?

    As a young tree it benefits from regular watering, but once established Banksia integrifolia ‘Sentinel’ develops excellent drought tolerance. It thrives in coastal, sandy and low-water environments, maintaining its narrow, upright habit with minimal supplementary watering.

    Banksia integrifolia 'Sentinel'

    Frequently Asked Questions

    How tall does Sentinel Banksia grow?

    Sentinel grows to 4-6 metres tall with a narrow upright form just 2-3 metres wide, making it ideal for small gardens and narrow planting strips.

    How fast does Sentinel grow?

    Sentinel has a moderate growth rate of 40-60cm per year once established.

    What is the difference between Sentinel and standard Coast Banksia?

    Sentinel is a compact upright cultivar of Banksia integrifolia, reaching just 4-6m compared to 8-15m for the standard species. Its narrow form suits small gardens, while standard Coast Banksia is better for larger landscapes and screens.

    Does Sentinel attract birds?

    Yes. The golden cylindrical flower spikes are a major nectar source for native honeyeaters, lorikeets, and pollinators through autumn and winter.

    Is Sentinel suitable for coastal gardens?

    Yes. Sentinel inherits the strong coastal tolerance of Banksia integrifolia and handles salt spray, sandy soils, and exposed coastal positions with ease.

    Can Sentinel grow in pots?

    Yes. Sentinel performs well in large pots (60L+) thanks to its compact narrow form, making it a popular choice for balcony and courtyard planting.

    Is Sentinel an Australian native?

    Yes. Sentinel is a cultivar of Banksia integrifolia, native to the east coast of Australia from QLD through to VIC.

    Banksia integrifolia 'Sentinel'

    Delivery & help

    Banksia integrifolia 'Sentinel'

    Pot sizes & dimensions

    Pot / bag size Width Depth
    30cm Pot33cm30cm
    40cm/45L Pot44cm41.5cm
    50cm Pot / 70L Pot55cm41.8cm
    100L Bag50.6cm52.8cm
    150L Bag66cm55cm
    200L Bag71.5cm60.5cm
    300L Bag88cm63.8cm
    400L Bag99cm66cm
    500L Bag122cm66cm
    750L Bag134cm69cm
    1000L Bag146.3cm71.5cm
    2000L Bag176cm82.5cm

    General planting reference. Container dimensions can vary by supplier and batch.

    Compare sizes side by side

    * Heights are approximate and vary between individual trees.

    30cm

    0.7m - 1.2m Approx.

    $200.00

    40cm/45L - Pre Order December 26

    Enquire for current heights

    $340.00

    100L - September Batch - Pre Order

    1.5m - 2m Approx.

    $760.00

    200L

    Enquire for current heights

    $1,350.00

    Unavailable

    They’re loved for their narrow upright habit, silver-backed foliage, and cylindrical golden flower spikes that provide striking colour and attract wildlife.

    Banksia integrifolia 'Sentinel'

    Grown across more than 100 acres, and held to one standard: premium A+ grade stock.

    Banksia integrifolia 'Sentinel'
    Banksia integrifolia 'Sentinel'

    Perfect pairs

    Enriched Planting Mix (AO Certified)

    Enriched Planting Mix is a certified organic blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent, bagged in 30L. It is built to be dug through existing garden soil at planting time rather than used on its own, and the gypsum...

    Read product details

    Enriched Planting Mix is a certified organic blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent, bagged in 30L. It is built to be dug through existing garden soil at planting time rather than used on its own, and the gypsum is what sets it apart from a plain compost.

    Gypsum helps break up heavy clay so water and roots can move through it, while the compost and manure return organic matter and nutrient to tired ground. The coarse bark holds structure and keeps air around the root zone, and the wetting agent keeps moisture in the soil longer after rain or watering.

    Use it when planting trees, shrubs, roses, fruit trees and exotic garden plants, particularly into clay. Dig a hole twice the width of the pot and 7 centimetres deeper, then mix roughly one third planting mix through the excavated soil. Spread 7 centimetres of that improved soil in the base before setting the plant in.

    Frequently Asked Questions

    About Enriched Planting Mix

    What is Enriched Planting Mix made from?

    It is a blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent. Each part has a job. The compost and manure supply organic matter and nutrient, the gypsum works on clay structure, the bark keeps air around the roots and the wetting agent holds moisture in the soil.

    What plants is it suitable for?

    It suits exotic garden plants, including roses, ornamental and deciduous trees, fruit trees, shrubs and perennials, and it earns its keep most on heavy clay sites. It is a planting mix rather than a potting mix, so its job is improving soil at planting time. Phosphorus sensitive natives are the one clear exception.

    Is it safe for natives?

    No, not for the phosphorus sensitive ones. The composted animal manure in this blend lifts phosphorus well above what Proteaceae such as Banksia, Grevillea, Hakea and Protea will tolerate, and the result can be leaf burn, dieback and plant death. Use the Native Potting Mix for those species, or plant them into unimproved local soil.

    Is it certified organic?

    Yes. It is a certified organic product with no chemical additives, which is why the manure and compost in it are fully composted rather than raw. That makes it sound around fruit trees and vegetable beds, and it means you are adding genuine organic matter to your soil rather than a synthetic conditioner.

    How much do I need?

    Work on roughly one third planting mix to two thirds of the soil you dug out of the hole. For a shrub out of a 200 millimetre pot that is only a few litres. An advanced tree going into a large hole will take considerably more. Judge the quantity by the volume of the hole rather than the size of the plant.

    Can I use it in pots?

    It is not a potting mix and should not be used on its own in a container. The blend is designed to be diluted through garden soil, and used straight in a pot it holds too much water and settles badly. For containers, reach for a premium potting mix, or the native mix if you are potting natives.

    Does it need to be watered in?

    Yes. Water the plant well several hours before you plant it, then water thoroughly again once the hole is backfilled and the soil firmed down. That first deep watering settles the improved soil around the root ball and drives out air pockets. Keep the water up over the first few months while the roots establish.

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