You Don't Need a Degree in Botany to Grow Aquarium Plants
I'm going to let you in on a secret that the planted tank community sometimes overcomplicates: growing aquarium plants isn't hard. It really isn't. Yes, there are species that need high lighting, CO2 injection, precise fertilizer dosing, and a PhD-level understanding of water chemistry. But there's also a whole world of gorgeous, hardy plants that will grow in basically any tank with a functioning light and some water. Those are the plants we're talking about today.
When I started my first planted tank, I made every mistake in the book. I bought plants that needed conditions I couldn't provide, killed them, felt bad, and almost gave up. Then a friend at my local fish club handed me a bag of java moss and some anubias trimmings and said, "Just stick these in there. You'll be fine." He was right. Those plants are still alive and thriving years later, and they taught me that the key to planted tanks as a beginner is choosing the right plants — not buying the right equipment.
What Makes a Plant "Easy"?
Before we get into specific species, let's define what makes a plant beginner-friendly:
- Low light tolerance: It grows under basic LED lights that come with most aquarium kits, without needing expensive high-output lighting.
- No CO2 required: It grows without injected carbon dioxide. CO2 injection systems are great but add complexity and cost.
- Minimal fertilization: It does fine with nutrients from fish waste alone, or with occasional liquid fertilizer dosing.
- Forgiving: It doesn't melt, die, or throw a fit when conditions aren't perfect.
The plants on this list meet all four criteria. They're the ones I recommend to every beginner, and they're the ones I still keep in my own tanks alongside more demanding species.
The Best Low-Light Aquarium Plants
Java Fern (Microsorum pteropus)
If I had to recommend exactly one plant to a beginner, it would be java fern. This thing is practically indestructible. It grows slowly but steadily under low light, doesn't need CO2, and actually does better when you don't bury it in substrate.
Key care tips:
- Attach to driftwood or rocks using thread, fishing line, or super glue gel. Don't plant the rhizome (the thick horizontal stem) in substrate — it will rot.
- It propagates by producing baby plants (called plantlets) on the undersides of mature leaves. Once these develop roots, you can detach and place them elsewhere.
- Brown or transparent spots on leaves are normal and often where new plantlets grow.
- Comes in several varieties: regular, narrow leaf, trident, and windelov (lace). All are equally easy.
Anubias (Anubias barteri and varieties)
Anubias is the other bulletproof plant that belongs in every beginner's tank. It's slow-growing, tolerates almost any conditions, and has thick, attractive dark green leaves that give a tank a lush, established look.
Key care tips:
- Like java fern, attach to hardscape rather than burying in substrate. The rhizome must stay above the substrate line.
- Grows so slowly that algae can sometimes colonize its leaves. Snails or otocinclus catfish help keep leaves clean.
- Anubias nana (petite) is a tiny variety great for nano tanks. Anubias barteri var. barteri is larger and works well as a mid-ground plant.
- Can grow partially emersed (above water) — in paludariums, it's a champion.
Java Moss (Taxiphyllum barbieri)
Java moss is less a plant and more a lifestyle. It grows everywhere, on everything, and with almost zero effort on your part. It attaches to surfaces, forms dense mats, and creates a soft, natural look that's perfect for shrimp tanks, breeding tanks, and aquascapes alike.
Key care tips:
- Attach to driftwood, rocks, or mesh with thread or super glue. It'll anchor itself within a few weeks.
- Can also be left to float freely, where it forms clumps that provide cover for fry and shrimp.
- Trim regularly to prevent it from becoming too dense, which can trap debris inside and create dead spots with poor water flow.
- Grows faster in moderate light but survives in very low light.
Hornwort (Ceratophyllum demersum)
Hornwort is the fast-growth champion of the easy plant world. If you need a tank filled with greenery quickly, hornwort delivers. It's a floating or loosely anchored stem plant that grows rapidly, absorbs tons of nutrients from the water, and helps control algae by outcompeting it for resources.
Key care tips:
- Can float at the surface or be weighted down with plant anchors. It doesn't develop true roots, so planting in substrate is optional.
- Grows fast — sometimes inches per week in good conditions. Be prepared to trim frequently.
- It can shed needle-like leaves, especially right after being introduced to a new tank. This is normal and temporary.
- Great for tanks with messy fish (goldfish, cichlids) because it absorbs nitrates rapidly.
Cryptocoryne (Various species)
Crypts are a large family of rosette plants from Southeast Asia, and several species are excellent for beginners. They grow from the substrate (unlike java fern and anubias) and form attractive bushy clusters once established.
Key care tips:
- Cryptocoryne wendtii is the most common and beginner-friendly species. It comes in green, brown, red, and bronze varieties.
- Crypts are famous for "crypt melt" — when introduced to a new tank, they often lose most of their leaves. Don't panic and don't remove the plant. The roots are usually fine, and new leaves adapted to your water conditions will grow back within a few weeks.
- They spread through runners, slowly forming clusters over time.
- Plant the roots in substrate but keep the crown (where the leaves emerge) above the substrate line.
Amazon Sword (Echinodorus bleheri)
The amazon sword is the classic centerpiece plant. It's a large rosette plant with broad, bright green leaves that can reach 12-20 inches tall in good conditions. Perfect as a background or focal-point plant in tanks 20 gallons and up.
Key care tips:
- Unlike the previous plants, amazon swords are heavy root feeders. They benefit significantly from root tab fertilizers pushed into the substrate near their roots every 2-3 months.
- Plant deeply in the substrate, burying the roots completely but leaving the crown exposed.
- May melt back when first added (especially if it was grown emersed at the nursery) but will regrow submersed leaves.
- Gets big — not suitable for nano tanks. Give it at least a 20-gallon to reach its potential.
Water Wisteria (Hygrophila difformis)
Water wisteria is a fast-growing stem plant with attractive, finely divided leaves that look almost fern-like. It fills in background space quickly and is very forgiving of beginner mistakes.
Key care tips:
- Can be planted in substrate or left to float. Floating wisteria develops slightly different leaf shapes and makes a nice surface cover.
- Grows fast, so regular trimming is needed. Cut stems can be replanted to propagate new plants.
- Leaf shape changes with light intensity — more divided in higher light, more rounded in lower light. Both forms are normal and attractive.
Vallisneria (Vallisneria spiralis, V. americana)
Vallisneria (often just called "val") is a grass-like plant that forms tall, flowing ribbons reaching from the substrate to the surface. It creates a beautiful, natural look in the background of a tank and spreads rapidly once established via runners.
Key care tips:
- Plant the roots in substrate, keeping the crown above the surface. Val doesn't do well with its crown buried.
- Spreads through runners — new plants pop up inches or feet away from the mother plant. You'll have more than you know what to do with eventually.
- Doesn't tolerate Excel or liquid carbon products well. If you dose these, val may melt.
- Jungle val (V. americana) gets very tall — up to 6 feet of leaf length. It can be trimmed but looks best when allowed to reach the surface and flow along it.
Setting Up a Low-Light Planted Tank
Lighting
The LED light that came with your tank kit is probably sufficient for the plants on this list. If your kit didn't include a light, a basic aquarium LED rated for planted tanks will work. You don't need the expensive high-PAR models marketed toward advanced aquascapers. Run your lights for 6-8 hours per day on a timer. More than that invites algae; less than that may slow plant growth.
Substrate
Inert gravel or sand works for epiphyte plants (java fern, anubias, java moss) that attach to hardscape. If you're growing root-feeding plants like crypts, swords, or val, a nutrient-rich planted substrate or regular gravel with root tab fertilizers will serve you much better. Popular planted substrates include Fluval Stratum and Seachem Flourite.
Fertilization
For a low-tech tank, a weekly dose of an all-in-one liquid fertilizer covers the needs of most easy plants. Root tabs every 2-3 months handle the heavier root feeders. You don't need to get into the weeds of macro and micro nutrient ratios at this stage — keep it simple and your plants will grow.
Common Beginner Mistakes
- Too much light, not enough plants: This is the number one cause of algae problems. If algae is taking over, either reduce your light duration, add more plants, or both.
- Burying rhizome plants: Java fern and anubias rhizomes need to be exposed, not buried. This kills more beginner plants than anything else.
- Giving up after melt: Many plants go through a transition period where old leaves die off and new ones grow in. Wait at least 3-4 weeks before deciding a plant has failed.
- Not using a timer: Inconsistent lighting is terrible for plants and great for algae. A basic outlet timer costs a few dollars and makes a huge difference.
A planted tank doesn't have to be complicated or expensive. Start with a few of the hardy species on this list, give them basic light and time to establish, and you'll be surprised how quickly your tank transforms from a box of water into something that actually looks like an underwater garden. Once these easy plants are thriving, you'll have the confidence and the foundation to try more challenging species down the road.