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Encephalartos altensteinii Lehm.

Common name(s): Bread Tree, Broodboom, Eastern Cape Giant Cycad, uJobane

Family: Zamiaceae Subfamily: Encephalartoideae Synonym(s): Enceohalartos marumii de Vriese, Encephalartos regalis W. Bull, Zamia altensteinii Lehm., Heynh., Zamia katzeri Regel ex J. Schust., Zamia vroomanii Gentil
Plant
Plant
Taken by Ken Harrington on 4th October, 2021 at Adelaide Botanic Gardens
Stem_lower
Stem (Lower)
Taken by Ken Harrington
Stem_upper
Stem (Upper)
Taken by Ken Harrington
Frond_front
Frond (Front)
Taken by Ken Harrington
Pinna_front
Pinna (Front)
Taken by Ken Harrington
Inflorescence_male
Inflorescence (Male)
Taken by Ken Harrington
Inflorescence_female
Inflorescence (Female)
Taken by Ken Harrington
Expand all
Palm / Palm Ally Properties
Origin(s)
South Africa
  • Eastern Ca: Indigenous
  • KwaZulu: Indigenous
Plant Type
Cycad, Palm Ally
Cycad,
Palm Ally
Climate Range(s) - Habitat
Temperate Warm, Mediterranean, Tropical-Sub, Tropical
Temperate Warm,
Mediterranean,
Tropical-Sub,
Tropical
Aspect Range(s)
Sun - Full, Shade - Dappled, Shade - Light
Sun - Full,
Shade - Dappled,
Shade - Light
Habitat Range(s)
Coastal
Coastal
Habitat Zone(s)
Cliffs, Coastal margins, Exposed, Exposed Stony embankments, Foothills, Gullies / Valley's / Canyon's, Hill Sides, Moist areas, Moist Slopes, Plains, Rivers / Creeks / Streams, Rock crevices, Rocky, Sandy Moist, Scattered, Slopes, Understory, Well drained
Cliffs,
Coastal margins,
Exposed,
Exposed Stony embankments,
Foothills,
Gullies / Valley's / Canyon's,
Hill Sides,
Moist areas,
Moist Slopes,
Plains,
Rivers / Creeks / Streams,
Rock crevices,
Rocky,
Sandy Moist,
Scattered,
Slopes,
Understory,
Well drained
Mature Height
6-7m
6-7m
Mature Width
2-3m, 3-4m
2-3m,
3-4m
Growth Rate
Very Slow
Very Slow
Plant Shape
Standard Crown - Dense
Standard Crown - Dense
Standard Crown - Dense Standard Crown - Dense
Life Span
300-400yrs, 400-500yrs, 500-600yrs, 600-1000yrs
300-400yrs,
400-500yrs,
500-600yrs,
600-1000yrs
Frond Properties
Frond Colour(s) (front)
Glossy, Green, Green Light
Glossy,
Green,
Green Light
Frond Colour(s) (back)
Green, Green Light
Green,
Green Light
Frond Texture (front)
Leathery
Leathery
Leathery Leathery
Rigid
Rigid
Frond Texture (back)
Glabrous
Glabrous
Leathery
Leathery
Glabrous Glabrous,
Leathery Leathery
Rigid
Rigid
Frond Length
2-2.25m, 2.25-2.5m, 2.5-2.75m, 2.75-3m
2-2.25m,
2.25-2.5m,
2.5-2.75m,
2.75-3m
Frond Width
100-150mm, 150-200mm
100-150mm,
150-200mm
Frond Aroma
None
None
Frond Shapes
Pinnate / Parapinnate
Pinnate / Parapinnate
Recurved
Recurved
Pinnate / Parapinnate Pinnate / Parapinnate,
Recurved Recurved
Frond Arrangement
Alternate
Alternate
Whorled
Whorled
Alternate Alternate ,
Whorled Whorled
Frond Attachment
Petiolate
Petiolate
Petiolate Petiolate
Pinna Shape(s) (Frondlet)
Lanceolate
Lanceolate
Lanceolate Lanceolate
Pinna Length (Frondlet)
90-100mm, 100-150mm
90-100mm,
100-150mm
Pinna Width (Frondlet)
15-20mm, 20-25mm
15-20mm,
20-25mm
Pinnae Arrangement
Uneven Pinnae
Uneven Pinnae
Uneven Pinnae Uneven Pinnae
Pinnule Apice(s) (Leaflet)
Acute Narrowly
Acute Narrowly
Acute Narrowly Acute Narrowly
Pinnule Base(s) (Leaflet)
Truncate
Truncate
Truncate Truncate
Pinnule Margin(s) (Leaflet)
Dentate
Dentate
Dentate Dentate
Pinnule Venation (Leaflet)
Parallel
Parallel
Parallel Parallel
Trunk / Stem Properties
Colour(s) (Upper/Crown Shaft)
Grey-brown, Grey-green
Grey-brown,
Grey-green
Colour(s) (Base)
Grey-brown
Grey-brown
Texture (Upper)
Coarse , Knobbly
Coarse,
Knobbly
Texture (Base)
Pitted
Pitted
Rough / Scabrous
Rough / Scabrous
Pitted Pitted,
Rough / Scabrous Rough / Scabrous
Coarse
Coarse
Cross Section
Terete
Terete
Terete Terete
Diameter
350-400mm
350-400mm
Length
2.5-3m, 3-3.5m
2.5-3m,
3-3.5m
Features
Leaf Base Scars
Leaf Base Scars
Leaf Base Scars Leaf Base Scars
Construction
Pith Continuous
Pith Continuous
Pith Continuous Pith Continuous
Inflorescence (Flower) Properties
Gender: Male
Colour(s)
Green-yellow
Green-yellow
Flower Shape(s)
Male Non-staminate Flower
Male Non-staminate Flower
Male Non-staminate Flower Male Non-staminate Flower
Arrangements
Male Inflorescence Cone
Male Inflorescence Cone
Male Inflorescence Cone Male Inflorescence Cone
Arrangement Size(s)
400-425mm, 425-450mm, 450-500mm
400-425mm,
425-450mm,
450-500mm
Pollinator(s)
Insects
Insects
Male and Female Flowers Borne
On Separate Plant
On Separate Plant
Gender: Female
Colour(s)
Green-yellow
Green-yellow
Flower Shape(s)
Female or Pistillate Flower
Female or Pistillate Flower
Female or Pistillate Flower Female or Pistillate Flower
Aroma(s)
None
None
Arrangement Size(s)
375-400mm, 400-425mm, 425-450mm
375-400mm,
400-425mm,
425-450mm
Pollinator(s)
Insects
Insects
Male and Female Flowers Borne
On Separate Plant
On Separate Plant
Indusia (Fruiting Body) Properties
Type
Cone Simple
Cone Simple
Cone Simple Cone Simple
Shape(s)
Ellipsoid
Ellipsoid
Oblong
Oblong
Ellipsoid Ellipsoid,
Oblong Oblong
Outer Colour(s)
Green-yellow
Green-yellow
Outer Texture
Rough / Scabrous
Rough / Scabrous
Rough / Scabrous Rough / Scabrous
Coarse
Coarse
Length
400-450mm, 450-500mm
400-450mm,
450-500mm
Seed Properties
Type
Nutlet
Nutlet
Nutlet Nutlet
Colour
Red, Shiny
Red,
Shiny
Texture(s)
Glabrous
Glabrous
Smooth
Smooth
Glabrous Glabrous,
Smooth Smooth
Size
30-40mm
30-40mm
Seed Appendage
Flesh
Flesh
Seed Dispersal
Birds
Birds
Seed Number
many
Root Properties
Type
Collaroid Root
Collaroid Root
Subterranean Stem/Adventitious Root
Subterranean Stem/Adventitious Root
Collaroid Root Collaroid Root,
Subterranean Stem/Adventitious Root Subterranean Stem/Adventitious Root
Invasiveness
None
None
Soil Properties
Type(s)
Clay-loam, Loam, Sandy-loam, Sand, Stony
Clay-loam,
Loam,
Sandy-loam,
Sand,
Stony
pH Range(s)
Slightly Acid, Neutral, Slightly Alkaline
Slightly Acid,
Neutral,
Slightly Alkaline
Condition(s)
Damp
Damp
Moist
Moist
Moist-Dry
Moist-Dry
Damp Damp,
Moist Moist,
Moist-Dry Moist-Dry
Fertile , Shallow , Deep , Well Drained
Fertile,
Shallow,
Deep,
Well Drained
Salinities
Slight
Slight
Slight Slight
Waterlogging Class
W0 – Low tolerance
W0 – Low tolerance
Watering Requirements
WR3 - never let soil dry out, WR4 - allow soil to dry between watering
WR3 - never let soil dry out,
WR4 - allow soil to dry between watering
Other Properties / Uses
Bee Attraction
None
None
Bird Attraction
None
None
Butterfly Attraction
None
None
Frog Habitat
None
None
Carbon Sequestration Potential
Low
Low
Wood Density
Low < 600kg/c.m.
Low < 600kg/c.m.
Coastal
1st Line
1st Line
Edible(s)
Nuts - Eaten after processing, Nuts - Eaten cooked
Nuts - Eaten after processing,
Nuts - Eaten cooked
Fire Regeneration(s)
Regrowth
Regrowth
Fire Retarding
Moderate
Moderate
Drought Tolerance
Moderate
Moderate
Frost Tolerance
Moderate
Moderate
Smog Tolerance
Good
Good
Snow Tolerance
None
None
Indigenous Use(s)
Nuts - Eaten after processing, Nuts - Eaten roasted
Nuts - Eaten after processing,
Nuts - Eaten roasted
Landscape Use
Good
Good
Street Use
None
None
Commercial Use(s)
Horticulture - Amenity
Horticulture - Amenity
Maintenance(s)
Dead Fronding
Dead Fronding
Special Purpose(s)
Garden-Container, Fire Resistant, Foliage-Interesting, Garden-Coastal, Garden-Foliage, Garden-Informal, Garden-Tropical, Irritating-Leaves, Shade Tolerant, Shady Dry, Shady Moist, Specimen, Sunny Moist, Tolerant-Deer, Tolerant-Kangaroo's, Tolerant-Rabbits/Hares
Garden-Container,
Fire Resistant,
Foliage-Interesting,
Garden-Coastal,
Garden-Foliage,
Garden-Informal,
Garden-Tropical,
Irritating-Leaves,
Shade Tolerant,
Shady Dry,
Shady Moist,
Specimen,
Sunny Moist,
Tolerant-Deer,
Tolerant-Kangaroo's,
Tolerant-Rabbits/Hares
Dormancy
Winter
Winter
Humidity Requirements
Medium, High
Medium,
High
Vulnerability
VU - Vulnerable
VU - Vulnerable
Altitude Range - Habitat
0-100m, 100-200m, 200-300m, 300-400m, 400-500m, 500-600m
0-100m,
100-200m,
200-300m,
300-400m,
400-500m,
500-600m
Annual Precipitation Range
800mm, 850mm, 900mm, 950mm, 1,000mm
800mm,
850mm,
900mm,
950mm,
1,000mm
Fertilising Requirements
FR6, FR11
FR6,
FR11
Wind Tolerance
Strong Winds
Strong Winds
Poisonous To
Humans, Dogs, Horses, Cattle, Sheep, Goats, Pigs, Livestock
Humans,
Dogs,
Horses,
Cattle,
Sheep,
Goats,
Pigs,
Livestock
Poisonous Parts
Leaves, Nuts
Leaves,
Nuts
Propagation
Fresh Seed, Offsets

General Notes

A very hardy and adaptable cycad as a specimen planting in the garden or landscape. Older plants may form branches. When mature enough to form cones they can produce 2-5 inflorescence. A specimen in Kew Gardens is reported to be the oldest potted plant 1775 in the World.

Propagation Notes

Expand all
Fresh Seed
Sowing
Spring
Material Preparation

The seed takes 6 - 9 mths to ripen. Pick the fruit when it is when it is starting to open up. Peel off the outer flesh or if too hard, soak the seeds in warm water for 48 - 72 hours to loosen the outer flesh. Change the water daily. Discard any seeds that float to the top, keep the ones that sink. Floating seeds won't germinate as they lack an endosperm. Allow to dry. Store in a cool, dark place. It is best to sow the seed as soon as possible for best results.

Viability:-        6 - 12 months

Seeds/gram:-

Propagating Mix

1 part Cocopeat + 1 part Perlite  + 1 part coarse washed sand

Treatment

If the seed has been stored for awhile, soak in a bowl or bucket of water overnight to soften the outer coat. Fill Forestry or P2 Tubes or 100mm pots or 150mm deep seedling trays, then press the seeds 2/3 of the way into the mix, till just the flat side is above the mix surface, water in well with Previcur fungicide mix. Place in hothouse. Maintain hothouse environment between 50-75% humidity and temperature between 20-30° C. Spray fortnightly with fungicide. Keep in bright but indirect light.

In warmer climates, place outside in a shade house and keep moist but not too wet.

Viable seeds/gram:-          (90% germination rate on fresh picked seed)

Germination time:-     4 - 24 months       

Pricking out:-              2 - 3 months after germination

Pot Mix:-                     1 part Premium Potting Soil  +  1 part coarse washed sand 

When potted place in shaded warm position and ready to plant out when whorl of leaves appear

Offsets
Division
Spring
Material Preparation

Select offsets that have a whorl of fronds in health condition and 1/4 - 1/3 the size of the mother plant. With a sharp knife, slice down the side of the stem of the mother plant to remove the offset with roots attached where possible. Place to one side and allow the wound to callous for 4 - 6 hours.

Propagating Mix

1 part Premium Potting Mix + 1 part coarse washed sand

Treatment

1/2 fill the 140 - 200mm pot with mix. Hold the offset over the soil mix in the pot and back fill around the offset and firm down. The offset should stand firm and the whorl of leaves be approximately 20-30mm above the mix, not too deep or it will rot. Water the pots of mix thoroughly with Previcur fungicide.  Place in cold house, keep moist. Maintain cold house environment between 50-75% humidity and temperature between 20-30° C.

Strike Rate:-     Field Stock        75-95 %

                        Nursery Stock   75-95 %

Rooting time:- Field Stock        3 - 6 mths

                        Nursery Stock  3 - 6 mths