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PROTEA Banksia serrata
Commonly known as Old man banksia, Red honeysuckle, Saw banksia, Saw-toothed banksia
Serrated leaves and yellow-green flowers
Further Reading....
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EvergreenAlternate, narrowly oblong, toothed leaves 8-15cm (3-6in) long, downy and light red or reddish brown at first, then leathery, smooth and semi-glossy, deep green
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YellowYellow-green
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Height3-20m (10-66ft)
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Spread2-8m (6½-26ft)
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Tall ShrubErect, then spreading, shrub or tree. Produces cylindrical flower heads 9-15cm (3½-6in) long
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Tender - cool or frost free greenhouseTolerant of low temperatures, but not surviving being frozen. Except in frost-free inner-city areas or coastal extremities requires glasshouse conditions. Plant can withstand temperatures down to 1°C (34°F)
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Will grow outside in milder locationsThis could include plants which would survive happily in a greenhouse or conservatory if not in a mild location. If you have a sheltered spot in your garden then it may do well here.
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Full sun
PROTEA Banksia serrata
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Additional FeaturesPests & DiseasesPhytophthora root rot. Plants will become chlorotic if soil contains too much phosphate or limePlace of originAustralia (New South Wales, Victoria)Resistant to honey fungusThese plants have little or few problems with honey fungus.
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Garden Location/ConditionsAustralian / New ZealandCoastal / windsweptSuitable for coastal areas
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HardinessHalf hardy (down to 0)
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Leaf marginSerrate
(see photos above) -
Leaf shapeOblong
(see photos above) -
Pruning groupPruning group 1Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
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Seasonal InterestAutumnSummer
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Soil ConditionsFree draining sandy soilNeutral to acid soilWell drained, dry, poor to moderately fertile soilPoor soil
Jan
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Protea - Care Guide
3-20m (10-66ft)
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2-8m (6½-26ft) |
Useful extras...
Fertilisers & Feeds - Empathy
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00
Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
3 options from £3.00
Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries.
It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50
Fertilisers & Feeds - Vitax
Blood, Fish & Bone
Improves vegetable, fruit and flower quality. Blood, Fish and Bone
contains three major nutrients essential for strong and healthy growth.
Only £6.00