Slender Anubias (Graceful Anubias) care

Light

Most houseplants sulk in a dim corner. Slender Anubias is one of the handful that doesn't. Well adapted to low light (10-25 PAR). Works excellently in dimly lit aquariums or shaded spots beneath floating plants. High light encourages algae on the slow-growing leaves. The tell that you've pushed even a low-light plant too far is soil that stays wet for a week — the plant has stopped transpiring, which means it's stopped using water, which is one short step from rot.

Watering

Water slender anubias submerged aquatic — 20-30% weekly water changes recommended.. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Adapts to soft to moderately hard water, pH 6.0-8.0. Consistent temperature and parameters prevent leaf deterioration. Avoid cold draughts near the tank.

Soil and pot

Slender Anubias grows best in rhizome secured to driftwood or rock — never buried in substrate. Attach with cotton thread, fishing line, or aquarium glue. Long petioles allow the leaves to sway elegantly in the current when the rhizome is fixed to a prominent piece of hardscape. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Slender Anubias sits happiest at around N/A (submerged aquatic) humidity and 22-28°C (72-82°F). Fully aquatic; grown submerged. The long petioles can also be kept emersed in very humid paludariums where aerial humidity exceeds 80%. If you keep the room above 22 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed slender anubias sparingly. Weekly liquid fertiliser additions (iron and micronutrients) maintain deep green colouration. CO2 injection is optional but assists with modest growth improvement. Root tabs are less relevant as this plant is rhizome-attached. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on slender anubias in the Growli community. Each is annotated with the most common cause so you know where to start.

• Algae on leaves — Slow growth combined with excess light encourages algae films. Reduce photoperiod and introduce algae eaters.
• Rhizome rot — Caused by burial in substrate. Ensure the rhizome is always exposed and attached to hardscape.
• Leaf yellowing — Typically indicates iron or nutrient deficiency. Supplement with a liquid fertiliser containing chelated iron.
• Leaf melt after planting — Transitional melt can occur when moving between emersed and submerged culture. Trim affected leaves and allow the plant to re-establish.

Companion plants

Slender Anubias pairs well with Anubias barteri var. nana, Microsorum pteropus 'Narrow', and Bucephalandra pygmaea. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Divide the rhizome with a clean blade, ensuring each cutting has 3 or more leaves. Reattach to hardscape with thread or aquarium glue. New leaves emerge after several weeks. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Slender Anubias is toxic to pets. Anubias gracilis is an aroid (Araceae) and contains insoluble calcium oxalate crystals. The ASPCA lists Anubias as toxic to cats and dogs, with ingestion causing oral pain, drooling, and gastrointestinal upset. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Slender Anubias deep-dive guides

Every aspect of slender anubias care, each with its own calibrated guide:

• Common slender anubias problems & fixes
• Slender Anubias watering schedule
• Slender Anubias light requirements
• Best soil mix for slender anubias
• Slender Anubias fertilizing guide
• When to repot slender anubias
• How to propagate slender anubias
• How to prune slender anubias
• What's eating my slender anubias?
• Slender Anubias growth rate & size
• Slender Anubias cold hardiness
• Slender Anubias temperature & humidity
• Is slender anubias toxic to cats & dogs?
• Is slender anubias toxic to cats?
• Is slender anubias toxic to dogs?
• All 13 Anubias varieties

Featured in these plant shortlists

Slender Anubias qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best low-light houseplants — Houseplants that need no direct sun and cope with a north-facing room or a spot well back from a window.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best small & tabletop houseplants — Compact houseplants that stay under about 40 cm — desk, shelf and windowsill plants that never outgrow a small space.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Slender Anubias is also commonly called Graceful Anubias or Lance-leaf Anubias.

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• All 11687 plant care guides in the Growli library