Amazon sword care guide

Scientific name

Aquarius grisebachii (often sold under older Echinodorus names)

Growth form

Large rooted rosette

Best placement

Midground or background with substantial open space

Light

Moderate

Care level

Beginner

Place the plant according to how it grows

An Amazon sword can become much wider than the plant sold in a pot. Give the crown open space, plant the roots without burying the crown, and avoid placing it directly under hardscape that will block mature leaves.

Use enough light, then stop increasing it

Moderate. Light drives demand for nutrients and carbon. If the plant is growing slowly, increasing intensity may create algae before it fixes the actual limitation. Start with a predictable photoperiod and change one variable at a time.

Feed the part of the plant that uses the nutrients

Sword plants are strong root feeders. Use a nutrient-containing substrate or root tabs placed near—but not directly against—the crown. Water-column fertiliser can support the system, but repeated pale new leaves often require a review of root nutrition and available micronutrients.

Substrate requirement: Rooted substrate with ongoing root nutrition. Observe new growth separately from old leaves because damage already present rarely repairs itself.

Propagate without weakening the parent plant

Healthy plants may send flower stalks or runners with plantlets. Allow plantlets to develop roots before separating them, then plant gently without burying the crown.

Read problems as patterns

Older emersed-grown leaves may decline after submersion while new underwater leaves develop. Judge success from the new growth. Pinholes, pale leaves or stunting require a full review of nutrition, not random addition of one product.

• Compare new leaves with old leaves.
• Check whether the issue affects one plant or the whole aquarium.
• Review lighting, fertiliser, water changes and planting work from the previous month.
• Correct one likely cause, then allow time for new growth to respond.

Common mistakes

• Buying the plant without allowing for adult width and height.
• Burying the crown.
• Relying only on water-column fertiliser in inert substrate.
• Removing every declining old leaf at once during transition.
• Moving the plant repeatedly before roots establish.

What to record

Record planting date, source, position, light schedule, fertiliser changes, root-tab dates, trimming, new growth and photographs from the same angle. Plant records are most useful when they show trends rather than isolated close-ups.