Last Updated: June 8, 2026
Introduction
The Amazon sword plant is one of the most iconic and widely kept aquatic plants in the hobby, prized for its bold, broad leaves that can grow over 20 inches tall and create a dramatic focal point in any freshwater aquarium. Native to South American river systems, it thrives in nutrient-rich substrate and moderate to high lighting, making it a natural centerpiece for community tanks and Amazon-biotope setups alike. With proper care, Amazon sword plants propagate readily by producing daughter plants on long runners.
What to Look For
- Root Feeding Requirements: Amazon swords are heavy root feeders that extract most of their nutrients from substrate — use a nutrient-rich substrate or bury root tabs beneath each plant to sustain long-term, healthy growth and prevent deficiencies.
- Lighting Needs: This plant performs best under moderate to high intensity full-spectrum lighting; low-light conditions lead to slow, pale growth, while adequate light produces large, dark green leaves that command attention in the tank.
- Tank Size Compatibility: Amazon swords are not small plants — in a well-fed tank, they can fill a 20-gallon aquarium completely; choose this plant for tanks of at least 30 gallons, or trim it regularly in smaller setups.
Top Picks
Aquatic Arts Amazon Sword Live Plant
Aquatic Arts is a consistently reliable source for healthy, large Amazon sword specimens shipped with roots intact and ready for planting. Their plants arrive with established root systems that anchor quickly in substrate, and the leaf size upon delivery is noticeably better than many competitors — a significant advantage since larger initial plants establish faster and begin runner production sooner.
Aquarium Co-Op Easy Root Tabs
Aquarium Co-Op's Easy Root Tabs are one of the best substrate fertilizer options for Amazon sword plants and other heavy root feeders. Each tab is pressed into the substrate near the plant's roots and releases nutrients slowly over several months, eliminating the need for constant supplementation. A box contains enough tabs to feed multiple large plants through an entire growing season.
Finnex Planted+ 24/7 LED Aquarium Light
The Finnex Planted+ 24/7 is a high-output LED planted tank light with a programmable 24-hour lighting cycle that mimics natural sunrise and sunset patterns, benefiting plant growth and fish behavior simultaneously. Its intensity is well-suited for Amazon swords and other demanding plants, and the slim, low-profile design mounts easily on any standard aquarium rim without interfering with the lid.
Planting and Caring for Amazon Sword
The Amazon sword is a classic centerpiece plant, prized for its large, lush green leaves that form an impressive bushy rosette. Unlike rhizome plants such as java fern, the Amazon sword is a true root feeder that should be planted in the substrate, with its crown, the point where leaves meet roots, kept just above the substrate line so it does not rot. Because it draws most of its nutrients through its roots, it grows best in a nutrient-rich substrate or with root tabs tucked into the gravel near its base.
Amazon swords are relatively undemanding but reward good conditions with vigorous growth. They do well under moderate lighting and appreciate a steady supply of nutrients, particularly iron and other root-available minerals. Given enough space, a healthy Amazon sword can grow quite tall and wide, so it suits larger tanks where it has room to spread. Provide stable water parameters in the typical tropical community range and be patient, as the plant takes time to establish before putting on rapid growth.
Feeding and Troubleshooting Growth
Because the Amazon sword is such a heavy root feeder, fertilization through the substrate is the key to keeping it lush. Root tabs placed near the base replenish the nutrients it pulls from the gravel, and they are often the cure for a sword that is yellowing or developing holes in older leaves, classic signs of nutrient deficiency.
- Use root tabs: Supplement the substrate near the plant’s base to feed its hungry roots.
- Plant the crown correctly: Keep the crown just above the substrate to prevent rot.
- Give it space: The plant grows large, so reserve room in a bigger tank for it to spread.
Amazon Sword in the Aquascape
With its bold, upright leaves, the Amazon sword shines as a centerpiece or background plant that draws the eye and anchors a layout. Its size means it works best in medium to large tanks where it has room to develop a full rosette without crowding everything else. Positioned toward the center or back, it creates a lush green backdrop for smaller foreground plants and fish to stand out against. Because it grows tall, it can also help conceal equipment like heaters and filter intakes. Given space, good light, and root feeding, a mature Amazon sword becomes a dramatic focal point that gives a planted tank a sense of maturity and depth.
Frequently Asked Questions
How do I plant an Amazon sword correctly?
Plant it in the substrate with the roots buried but the crown, where leaves meet roots, kept just above the substrate line. Burying the crown causes it to rot, so leave it exposed.
Does the Amazon sword need fertilizer?
Yes, as a heavy root feeder it benefits greatly from root tabs placed in the substrate near its base. These supply the iron and other nutrients it draws through its roots for lush growth.
How much light does an Amazon sword need?
It does well under moderate lighting and does not require an intense high-light fixture. Adequate light combined with root feeding produces full, healthy leaves.
Why are my Amazon sword leaves turning yellow or developing holes?
Yellowing leaves and holes typically signal a nutrient deficiency, often a lack of iron or other root-available minerals. Adding root tabs near the base usually resolves the problem and restores healthy green growth.
How big does an Amazon sword get?
A healthy Amazon sword can grow quite tall and wide, making it best suited to larger tanks. Give it space to spread so it can develop into the impressive centerpiece it is known for.
Final Thoughts
The Amazon sword plant is a spectacular, rewarding plant for any freshwater aquarium with sufficient size and lighting, and its ease of propagation means a single healthy specimen can eventually populate an entire tank with daughter plants. Feed the roots regularly and provide adequate light, and this plant will become the living centerpiece your aquarium deserves.
