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Alternanthera dentata 'Purple Knight' (Calico plant 'Purple Knight')
1 hour care
per year
per year
0.5m
Max height
Max height
0.5m
Max spread
Max spread
1-2 years
To maturity
To maturity
Plant details
Botanical name
Alternanthera dentata 'Purple Knight'
Other names
Calico plant 'Purple Knight', Joy weed 'Purple Knight', Parrot leaf 'Purple Knight', Ruby leaf 'Purple Knight', Black night 'Purple Knight'
Genus
Alternanthera Alternanthera
Variety or Cultivar
'Purple Knight' _ 'Purple Knight' is a vigorous, upright, spreading, tender, evergreen perennia,l often grown as an annual, with dark purple stems, lance-shaped to elliptic, dark purple leaves and, occasionally, white flowers in summer.
Alternanthera dentata 'Purple Knight' is: Evergreen
Habit
Branching, Spreading, Upright
Flower
Insignificant or absent, White in Summer
Foliage
Purple in Summer
How to care
Watch out for
Specific pests
Glasshouse red spider mite Glasshouse red spider mite
Fusarium wilt Fusarium wilt
General care
Pruning
Clip or pinch back to maintain a bushy habit.
Propagation methods
Division, Seed, Stem tip cuttings
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Where to grow
Alternanthera dentata 'Purple Knight' (Calico plant 'Purple Knight') will reach a height of 0.5m and a spread of 0.5m after 1-2 years.
Suggested uses
Beds and borders, City, Conservatory, Containers, Edging, Foliage only, Greenhouse, Ground Cover
Cultivation
Used as an annual, plant in light, moist but well-drained, fertile soil in a sheltered, sunny poistion. Tolerates partial shade but leaves will be darkest in full sun. Under glass, grow in loam-based compost in full light. In growth, water freely & feed m
Soil type
Chalky, Loamy, Sandy
Soil drainage
Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South
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
Alternanthera dentata 'Purple Knight'
Other names
Calico plant 'Purple Knight', Joy weed 'Purple Knight', Parrot leaf 'Purple Knight', Ruby leaf 'Purple Knight', Black night 'Purple Knight'
Genus
Alternanthera Alternanthera
Variety or Cultivar
'Purple Knight' _ 'Purple Knight' is a vigorous, upright, spreading, tender, evergreen perennia,l often grown as an annual, with dark purple stems, lance-shaped to elliptic, dark purple leaves and, occasionally, white flowers in summer.
Foliage
Evergreen
Habit
Branching, Spreading, Upright
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Colour
Flower
Insignificant or absent, White in Summer
Foliage
Purple in Summer
How to care
Watch out for
Specific pests
Specific diseases
General care
Pruning
Clip or pinch back to maintain a bushy habit.
Propagation methods
Division, Seed, Stem tip cuttings
Monthly care advice
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Where to grow
Alternanthera dentata 'Purple Knight' (Calico plant 'Purple Knight') will reach a height of 0.5m and a spread of 0.5m after 1-2 years.
Suggested uses
Beds and borders, City, Conservatory, Containers, Edging, Foliage only, Greenhouse, Ground Cover
Cultivation
Used as an annual, plant in light, moist but well-drained, fertile soil in a sheltered, sunny poistion. Tolerates partial shade but leaves will be darkest in full sun. Under glass, grow in loam-based compost in full light. In growth, water freely & feed m
Soil type
Chalky, Loamy, Sandy
Soil drainage
Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South
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 11, Zone 10
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 | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | South | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Indoor heated (H1), Tender in frost (H3) | Tell us... |
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