Intermediate
skill rating
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X Alworthia 'Black Gem' (Alworthia 'Black Gem')
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2 hours care
per year
per year
0.15m
Max height
Max height
0.2m
Max spread
Max spread
5-10 years
To maturity
To maturity
Plant details
Botanical name
X Alworthia 'Black Gem'
Other names
Alworthia 'Black Gem', Hybrid aloe 'Black Gem', Aloe 'Black Gem'
Genus
X Alworthia X Alworthia
Variety or Cultivar
'Black Gem' _ 'Black Gem' is a tender, clump-forming, stemless, evergreen, perennial succulent bearing fleshy, broadly linear, pointed, red- or bronze-flushed, dark green leaves and long, slender stems bearing tubular to funnel-shaped, orange-red flowers in spring.
X Alworthia 'Black Gem' is: Evergreen
Habit
Clump-forming, Rosette
Flower
Orange-red in Spring
Foliage
Flushed bronze, Dark-green, Flushed red in All seasons
How to care
Watch out for
Specific pests
Mealybugs Mealybugs
Diseases
Generally disease free.
General care
Pruning
Remove faded leaves as necessary.
Propagation methods
Offsets
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Where to grow
X Alworthia 'Black Gem' (Alworthia 'Black Gem') will reach a height of 0.15m and a spread of 0.2m after 5-10 years.
Suggested uses
Architectural, Conservatory, Containers, Drought Tolerant, Flower Arranging, Indoor, Low Maintenance, Mediterranean, Sub-Tropical
Cultivation
Grow under glass in cactus compost in bright, filtered light, low humidity, & good ventilation. Water moderately when in growth & apply a low nitrogen feed monthly. Keep almost dry in the winter. Pot on in spring. Stand outside in summer.
Soil type
Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Alkaline, Neutral
Light
Full Sun
Aspect
North, East
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Indoor heated (H1), Tender in frost (H3)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
X Alworthia 'Black Gem'
Other names
Alworthia 'Black Gem', Hybrid aloe 'Black Gem', Aloe 'Black Gem'
Genus
X Alworthia X Alworthia
Variety or Cultivar
'Black Gem' _ 'Black Gem' is a tender, clump-forming, stemless, evergreen, perennial succulent bearing fleshy, broadly linear, pointed, red- or bronze-flushed, dark green leaves and long, slender stems bearing tubular to funnel-shaped, orange-red flowers in spring.
Foliage
Evergreen
Habit
Clump-forming, Rosette
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Colour
Flower
Orange-red in Spring
Foliage
Flushed bronze, Dark-green, Flushed red in All seasons
How to care
Watch out for
Specific pests
Diseases
Generally disease free.
General care
Pruning
Remove faded leaves as necessary.
Propagation methods
Offsets
Monthly care advice
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Where to grow
X Alworthia 'Black Gem' (Alworthia 'Black Gem') will reach a height of 0.15m and a spread of 0.2m after 5-10 years.
Suggested uses
Architectural, Conservatory, Containers, Drought Tolerant, Flower Arranging, Indoor, Low Maintenance, Mediterranean, Sub-Tropical
Cultivation
Grow under glass in cactus compost in bright, filtered light, low humidity, & good ventilation. Water moderately when in growth & apply a low nitrogen feed monthly. Keep almost dry in the winter. Pot on in spring. Stand outside in summer.
Soil type
Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Alkaline, Neutral
Light
Full Sun
Aspect
North, East
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Indoor heated (H1), Tender in frost (H3)
USDA zones
Zone 12, 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: | Loamy, Sandy | Tell us... |
| Soil drainage: | Well-drained | Tell us... |
| Soil pH: | Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | North, East | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Indoor heated (H1), Tender in frost (H3) | Tell us... |
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