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Xanthorrhoea glauca (Grasstree)
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1 hour care
per year
per year
4.5m
Max height
Max height
3m
Max spread
Max spread
100-400 years
To maturity
To maturity
Plant details
Botanical name
Xanthorrhoea glauca
Other names
Grasstree, Black boy
Genus
Xanthorrhoea Xanthorrhoea
Species
X. glauca - X. glauca is a tender, palm-like, evergreen perennial with a branched or single, black, trunk-like stem topped with long, linear, blue-green leaves and tall, red-brown or cream flower scapes in early spring to early summer.
Xanthorrhoea glauca is: Evergreen
Habit
Irregular
Flower
Reddish-brown, Cream in Spring; Reddish-brown, Cream in Summer
Foliage
Blue-green in All seasons
How to care
Watch out for
Pests
Generally pest free
Diseases
Generally disease free
General care
Pruning
No pruning required.
Propagation methods
Seed
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Where to grow
Xanthorrhoea glauca (Grasstree) will reach a height of 4.5m and a spread of 3m after 100-400 years.
Suggested uses
Architectural, City, Drought Tolerant, Mediterranean, Containers, Sub-Tropical, Greenhouse
Cultivation
Grow in well-drained, fertile soil in full sun or light shade. Ensure you protect from strong and cold drying winds and from hard winter frosts. Water at the base as watering the crown will cause it to rot.
Soil type
Chalky, Loamy, Sandy
Soil drainage
Moist but well-drained, Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Tender in frost (H3)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Xanthorrhoea glauca
Other names
Grasstree, Black boy
Genus
Xanthorrhoea Xanthorrhoea
Species
X. glauca - X. glauca is a tender, palm-like, evergreen perennial with a branched or single, black, trunk-like stem topped with long, linear, blue-green leaves and tall, red-brown or cream flower scapes in early spring to early summer.
Foliage
Evergreen
Habit
Irregular
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Colour
Flower
Reddish-brown, Cream in Spring; Reddish-brown, Cream in Summer
Foliage
Blue-green in All seasons
How to care
Watch out for
Pests
Generally pest free
Diseases
Generally disease free
General care
Pruning
No pruning required.
Propagation methods
Seed
Monthly care advice
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Where to grow
Xanthorrhoea glauca (Grasstree) will reach a height of 4.5m and a spread of 3m after 100-400 years.
Suggested uses
Architectural, City, Drought Tolerant, Mediterranean, Containers, Sub-Tropical, Greenhouse
Cultivation
Grow in well-drained, fertile soil in full sun or light shade. Ensure you protect from strong and cold drying winds and from hard winter frosts. Water at the base as watering the crown will cause it to rot.
Soil type
Chalky, Loamy, Sandy
Soil drainage
Moist but well-drained, Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Tender in frost (H3)
USDA zones
Zone 11, Zone 10, Zone 9
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Loamy, Sandy | Tell us... |
| Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Tender in frost (H3) | Tell us... |
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