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Growing Inspiration
Inspiration for future Agardeni growing environments.
ornamentalFamily: AlismataceaeGenus: Echinodorus
Cultivar
Rubin Amazon Sword
Echinodorus 'Rubin'
Cultivar: Rubin
The Rubin Amazon Sword is a prized aquarium plant that transitions from deep ruby-red to bronze-green as its leaves mature. It develops a large, rosette-shaped habit that fills space beautifully in mid-to-background aquarium placements. This cultivar is highly adaptable to various water parameters, making it a reliable choice for hobbyists looking to add intense color to their aquatic landscape.
Echinodorus 'Rubin' is a stunning aquatic sword plant known for its vibrant ruby-red new foliage. It makes an excellent, eye-catching centerpiece for freshwater aquarium displays.
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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See this cultivar from starter plant to aspirational garden.
Plant Profile
Grow Rubin Amazon Sword with confidence
Key growing information first, with the complete reviewed cultivar profile available when you want it.
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Sun
Moderate to high light
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Water
Thrives in fully submerged freshwater aquariums with good water circulation.
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Mature size
12-20 inches tall and 10-15 inches wide
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Hardiness
N/A (Tropical aquarium plant)
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Growth habit
Rosette-forming aquatic perennial
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Plant type
Aquatic
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
New growth will display the most intense red coloration under high lighting and with regular iron-rich supplementation. It can reach a significant size, requiring sufficient space in the aquarium.
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Climate note
Best growth occurs in temperatures between 72 and 82 degrees Fahrenheit.
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Flower / fruit
Produces small white flowers on tall stalks if grown emersed or with leaf tips reaching the surface.
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
Moderate to high light
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Growth rate
Moderate
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Fertilizer
Regular fertilization via root tabs or liquid iron supplements is recommended to maintain deep red coloration.
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Pruning
Remove old, decaying leaves at the base to encourage fresh growth and maintain a tidy appearance.
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Care notes
New growth will display the most intense red coloration under high lighting and with regular iron-rich supplementation. It can reach a significant size, requiring sufficient space in the aquarium.
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
12-20 inches tall and 10-15 inches wide
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Growth habit
Rosette-forming aquatic perennial
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Spacing
10-15 inches apart for adequate development
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
Produces small white flowers on tall stalks if grown emersed or with leaf tips reaching the surface.
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
N/A (Tropical aquarium plant)
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Temperature
Best growth occurs in temperatures between 72 and 82 degrees Fahrenheit.
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
Thrives in fully submerged freshwater aquariums with good water circulation.
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Soil
Requires nutrient-rich aquarium substrate, preferably with root tabs or iron-rich clay supplementation.
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Soil pH
6.0 - 7.5
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
This is primarily grown as an aquatic plant in home aquariums; can grow emersed in high-humidity setups.
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Family
Alismataceae
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Foliage Look
Deep ruby-red, lanceolate, broad leaves with a visible, lighter-colored midrib.
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Foliage Rules
Leaves must be lanceolate, arching slightly, with color ranging from deep red (young) to darker olive-green (mature).
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Fruit Flower Look
Small, inconspicuous white flowers on a long, slender stalk.
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Fruit Flower Rules
Flowers are unlikely to be seen in a submerged aquarium starter stage; omit flowers from juvenile imagery.
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Growth Habit Rules
Maintain the rosette growth form; ensure images do not show a trailing or creeping habit.
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Mature Plant Look
A lush, dense, red-tinted rosetted specimen filling the midground of an aquarium.
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Mature Stage Morphology
Broad, lanceolate leaves arranged in a tight rosette with a pronounced midrib and deep red to brownish-green coloration.
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Morphology Rules
Focus on the rosette structure and the transition of leaf color from the center outward.
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Plant Faqs
Does Echinodorus 'Rubin' require CO2? Supplemental CO2 is not strictly required but will promote faster growth and deeper red colors. How tall does it grow? It typically reaches 12 to 20 inches, making it a great mid-to-background choice. Why are the leaves turning green? This is often due to low light or a deficiency in iron; ensure high light and supplement with root tabs.
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Root Look
White, healthy, robust fibrous roots typical of aquatic starters.
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Soil Look
Dark, fine-grained, nutrient-rich aquarium substrate.
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Starter Stage
Young tissue-culture or tray-grown plantlet with several delicate, smaller leaves.
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Starter Stage Morphology
Young leaves may appear thinner and more transparent than mature foliage, often with a lighter pinkish-red hue.
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Video Voiceover Script
Welcome to Agardeni, where inspiration for gardening helps us imagine how and where we will grow Rubin Amazon Sword. This is Rubin Amazon Sword, available as 18, 36, and 72 plant starter trays through the Agardeni Marketplace. Let this vibrant sword plant become part of your aspirational plan, helping you imagine the future aquatic environment you want to create. The defining feature of this plant is its stunning ruby-red foliage, which adds a deep, sophisticated color to your aquarium layout. Establish your starter by moving the plant into a four-inch pot with a quality, well-draining aquatic mix before moving it to your final underwater home. Find your inspiration with Agardeni. Explore real plants and real availability. Start. Plan. Grow.
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Youtube Tags
Echinodorus Rubin Amazon Sword Aquarium Plants Freshwater Aquarium Aquatic Gardening Agardeni Plant Starter Underwater Gardening Tropical Aquarium
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Youtube Video Summary
The Rubin Amazon Sword is a highly desired aquatic plant for its striking deep red foliage. Learn how to integrate this rosette-forming plant into your aquarium landscape for a splash of intense color.
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Youtube Video Title
Growing the Vibrant Echinodorus 'Rubin' Amazon Sword
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Future Buyer Brand Sellers
Possible future seller options for 2.5-inch, 4-inch, and 1-gallon finished plants.