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Growing Inspiration
Inspiration for future Agardeni growing environments.
ornamentalFamily: AraceaeGenus: Alocasia
Cultivar
Black Stem Alocasia
Alocasia 'Black Stem'
Cultivar: Black Stem
This stunning Alocasia variety brings a sophisticated look to any collection with its glossy, broad leaves contrasted against dark, nearly ink-colored petioles. Its bold architecture makes it an ideal centerpiece for bright, indoor spaces. As a tropical favorite, it rewards consistent care with rapid growth and increasingly impressive leaf size.
Alocasia 'Black Stem' is a striking tropical plant known for its bold, arrow-shaped foliage and dramatic, deep purple-to-black stalks.
Marketplace packs coming soon
Current nursery inventory and 18 / 36 / 72 pricing will appear here when available.
Cultivar Story
Start with Inspiration. Grow Your Aspiration.
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Marketplace Plant
A realistic representation of the starter plants offered in 18, 36, and 72 plant quantities.
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Aspirational Garden
Grow your aspirational plan into an inspirational garden.
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Plant Detail
A closer look at the fruit, flower, foliage, or mature defining characteristics of this cultivar.
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Repotting / Start Growing
Begin with a starter plant and establish it in a larger pot using quality potting soil with beneficials and fertilizer.
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Start · Plan · Grow
Start with real plants. Plan with current marketplace availability. Grow your aspirational garden.
Cultivar Video
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Cultivar Video Coming Soon
See this cultivar from starter plant to aspirational garden.
Plant Profile
Grow Black Stem Alocasia with confidence
Key growing information first, with the complete reviewed cultivar profile available when you want it.
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Sun
Bright, indirect light; avoid harsh, direct midday sun which can scorch the leaves.
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Water
Keep consistently moist but not soggy; allow the top inch of soil to dry out slightly between waterings.
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Mature size
3-5 feet tall and wide
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Hardiness
10-12
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Growth habit
upright, clumping perennial
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Plant type
tropical foliage plant
View Plant Data
Care, size, flowering, climate, soil, health, and additional reviewed data.
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View Plant Data
Care, size, flowering, climate, soil, health, and additional reviewed data.
Good to know
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Growing note
Maintain high humidity levels to prevent crisping of the leaf edges, especially in indoor environments during winter months.
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Climate note
Prefers warm temperatures above 65 degrees Fahrenheit; keep away from cold drafts or air conditioning vents.
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Flower / fruit
Rarely flowers in indoor cultivation; inconspicuous spathe and spadix flowers if they appear.
Growing & Care
Everyday care, growth, feeding, and pruning guidance.
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Growing & Care
Everyday care, growth, feeding, and pruning guidance.
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Sun / light
Bright, indirect light; avoid harsh, direct midday sun which can scorch the leaves.
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Growth rate
Moderate to fast during the active growing season.
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Fertilizer
Use a balanced liquid fertilizer diluted to half-strength during the active growing season.
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Pruning
Trim away yellowing or damaged leaves at the base of the petiole to encourage new growth.
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Care notes
Maintain high humidity levels to prevent crisping of the leaf edges, especially in indoor environments during winter months.
Size & Habit
How the plant grows and the space it needs at maturity.
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Size & Habit
How the plant grows and the space it needs at maturity.
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Mature size
3-5 feet tall and wide
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Growth habit
upright, clumping perennial
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Spacing
3-4 feet apart in landscape settings.
Flower / Fruit
Flowering, fruiting, pollination, bloom, and harvest behavior.
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Flower / Fruit
Flowering, fruiting, pollination, bloom, and harvest behavior.
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Flowering / fruiting
Rarely flowers in indoor cultivation; inconspicuous spathe and spadix flowers if they appear.
Climate & Hardiness
Cold, heat, chill, and regional growing considerations.
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Climate & Hardiness
Cold, heat, chill, and regional growing considerations.
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Hardiness zones
10-12
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Temperature
Prefers warm temperatures above 65 degrees Fahrenheit; keep away from cold drafts or air conditioning vents.
Soil & Water
Moisture, drainage, soil, and pH preferences.
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Soil & Water
Moisture, drainage, soil, and pH preferences.
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Watering
Keep consistently moist but not soggy; allow the top inch of soil to dry out slightly between waterings.
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Soil
Well-draining, airy aroid mix containing peat or coco coir, perlite, and bark.
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Soil pH
5.5-6.5
More Plant Data
19 additional reviewed fields from this Plant.id.
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More Plant Data
19 additional reviewed fields from this Plant.id.
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Container Growing
Thrives in containers; ensure pots have excellent drainage and use a potting mix that prevents water-logging.
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Family
Araceae
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Foliage Look
Large, glossy, deep green, arrow-shaped leaves with distinct lighter venation.
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Foliage Rules
Leaves must be arrow-shaped, glossy, and green; petioles must be distinctively dark purple, brown, or near-black.
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Fruit Flower Look
Inconspicuous, typical arum-family spadix, rarely produced in typical home settings.
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Fruit Flower Rules
Flowers are not a feature; exclude flowers in juvenile depictions.
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Growth Habit Rules
Maintain an upright, clumping architecture; stems should not be vine-like or procumbent.
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Mature Plant Look
Large, architectural tropical plant with broad leaves and dark, sturdy stalks.
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Mature Stage Morphology
Large, leathery, sagittate leaves held by sturdy, dark-pigmented petioles that can reach several feet in length.
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Morphology Rules
Focus on the dramatic contrast between the green leaf blade and the dark, thick petiole.
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Plant Faqs
How much light does Alocasia Black Stem need? It prefers bright, indirect light. Is Alocasia Black Stem pet safe? No, it contains calcium oxalate crystals which can be irritating to pets. How often should I water my Alocasia? Water when the top inch of soil feels dry to the touch.
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Root Look
White to tan fleshy roots emerging from a solid, bulb-like corm.
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Soil Look
Dark, rich, well-draining potting soil with visible perlite or bark chips.
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Starter Stage
Compact, herbaceous plant with 2-4 small leaves emerging from a central corm.
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Starter Stage Morphology
Leaves are often ovate and slightly more upright than mature foliage; petioles may show lighter coloration that darkens with age.
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Video Voiceover Script
Welcome to Agardeni, where inspiration for gardening helps us imagine how and where we will grow Black Stem Alocasia. This is Black Stem Alocasia, available as 18, 36, and 72 plant starter trays through the Agardeni Marketplace. Let this striking tropical plant become part of your aspirational plan, helping you imagine the future lush indoor growing space you want to create. Notice the defining ornamental contrast between the broad, glossy green foliage and the dramatic, dark, ink-colored stalks that give this plant its name. Start by moving your starter plug into a four-inch pot with a quality, well-draining mix to establish the plant before moving it later to a final container. Find your inspiration with Agardeni. Explore real plants and real availability. Start. Plan. Grow.
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Youtube Tags
Alocasia Black Stem Alocasia Tropical Plants Houseplants Indoor Gardening Foliage Plants Rare Plants Agardeni Plant Care
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Youtube Video Summary
Explore the bold, architectural beauty of the Alocasia Black Stem. This stunning tropical foliage plant is defined by its deep, dark petioles and large, glossy arrow-shaped leaves.
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Youtube Video Title
Alocasia Black Stem Tropical Houseplant Care and Growing
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Future Buyer Brand Sellers
Possible future seller options for 2.5-inch, 4-inch, and 1-gallon finished plants.