Hygrophila polysperma

Dwarf Hygro Growing & Care Guide

Dwarf Hygro is a incredibly resilient, fast-growing background plant native to India, renowned for its ironclad hardiness and dynamic leaf shapes. It is an absolute powerhouse at stripping nitrates from aquarium water, making it a premier choice for biological filtration and combating algae.

Lighting Low to Moderate

Water Hardness Aquatic (pH 6.0-8.0)

Substrate Sand, gravel or aquasoil

Water Temp 18°C - 30°C

Toxicity Pet Friendly (Non-toxic)

Botanical macro photography of Dwarf Hygro (Hygrophila polysperma) - Plant AI care database

How to Identify Dwarf Hygro

Dwarf Hygro (Hygrophila polysperma) has key botanical markers. Recognizing these features is crucial for successful aquascaping and thriving growth.

✔
Visual Shape & Growth: Bushy vertical stem plant with opposite, lance-shaped bright green leaves.
✔
Leaf Morphology: Small, lanceolate green leaves that can turn pink-bronze under strong light and iron dosing.
✔
Root & Anchoring Structure: Extremely robust, extensive white anchoring roots that rapidly colonize sand or gravel beds.

💡 Plant AI Tip: Take a photo with Plant AI to identify aquatic weeds and diagnose fungal spot diseases in 1 second.

Complete Cultivation & Spawning Guide

Follow our detailed scientific water parameters and care guides to keep your Dwarf Hygro thriving.

pH: 6.0 - 8.0, GH: 4 - 20 dGH. Incredibly tolerant of soft and hard water parameters alike.

Low demand. Grows at explosive speeds without pressurized CO2. Carbon injection promotes dense, compact growth.

Adapts to low, medium, or high lighting. High light combined with iron dosing turns the leaf crowns pinkish-bronze.

Clip any stem or branch. Remove bottom leaves of the clipping and insert into gravel. Can also propagate from a single leaf left floating.

Nitrate sponge. Requires regular liquid fertilizer dosing (potassium and iron) to prevent leaf yellowing and maintain rapid growth.

Plant in sand, gravel, or aquasoil. Requires a deep substrate to anchor its massive, robust root system.

Optimal temperature is 18°C to 30°C (64°F - 86°F). Sensitive to extreme cold below 15°C.

Appreciates steady, moderate water current to distribute nutrients through its large, bushy foliage.

Perfect for community tanks. Its thick root system offers great cover for fry, though herbivorous fish may nibble the soft leaves.

Its explosive growth rate rapidly strips nitrates and phosphates from the water, starving out green hair algae naturally.

Best placed in the background. Space stems at least 1 to 2 inches apart as the mature leaves spread out very wide.

Common Diseases & Treatment

Potassium Deficiency Chlorosis

Symptoms: Lower leaves develop pinholes, turn pale yellow, and eventually decay.

Action: Dose water column potassium weekly to support its rapid growth rate.

Iron Chlorosis

Symptoms: New leaves at the crown turn pale white or translucent green.

Action: Indicates a severe iron deficiency. Dose water column iron chelate weekly.

Frequently Asked Questions

Why is my Dwarf Hygro losing leaves?

This is caused by either severe potassium deficiency (leaves develop pinholes first) or light starvation. Trim top stems and dose potassium.

Can Dwarf Hygro grow emersed?

Yes! It grows exceptionally well emersed in damp soil, where it forms dense terrestrial carpets and blooms beautiful tiny white or violet flowers.

How fast does Dwarf Hygro grow?

Extremely fast. In a high-tech tank, it can double its size in a week, easily reaching the surface. Regular pruning is mandatory.

Is it safe for shrimp?

Yes, it is entirely non-toxic, pet-friendly, and offers safe hiding spots and biofilm grazing surfaces.