For a simple betta aquarium, start with a small Anubias or Java fern and add other plants only when the light, space, and maintenance suit them. Broad leaves offer resting places; taller growth and floating plants provide cover. Leave open swimming space and clear access to the surface.
Choose by growth habit, not a ranking
The plants below serve different jobs. A large sword and a tiny foreground crypt are not interchangeable. Live plants take up nutrients as they grow, but do not replace a cycled filter, testing, or water changes. Remove decaying material and thin dense surface cover.
Amazon sword
A broad-leaved rooted plant for a spacious aquarium. Check the cultivar’s mature size and provide root nutrition. Many swords outgrow small betta tanks; see Amazon sword care.
Anubias nana
A compact, slow-growing choice for modest light. Attach it to decor or keep the rhizome above the substrate. Burying the rhizome is different from planting the roots.
Marimo moss balls
Marimo are algae, not moss. Their preference for cooler conditions makes them a less straightforward choice for a warm betta aquarium. Read the marimo guide before buying.
Java fern
A useful low-maintenance plant to attach to wood or stone. Keep its rhizome exposed. Choose a smaller form if ordinary Java fern would dominate the layout; see Java fern care.
Water sprite
A finely divided fern that can grow planted or floating. It can fill a small aquarium quickly, so thin it before it crowds swimming space or the surface.
Java moss
Attach small portions to decor and trim loose growth. Dense mats collect debris, so clean around them during maintenance. See Java moss care.
Anacharis
A stem plant sold under several related names. Confirm the species and its temperature suitability before buying. Its narrow leaves provide cover; they are not broad resting platforms.
Pennywort
Check the scientific name: several plants share this common name. Brazilian pennywort can provide rounded leaves and trailing cover, but needs regular trimming when growth reaches the surface.
Duckweed
Useful surface shade, with a maintenance cost: tiny plants can spread into nearly every corner. Remove excess frequently and keep an open feeding and breathing area.
Hygrophila
A large genus, not one uniformly sized plant. Confirm the species and expected height. Many common stem forms need frequent pruning in small aquariums.
Hornwort
Usually easiest left floating. Do not bury its stems as though they were rooted plants. Remove shed needles before they collect beneath the decor; see hornwort care.
Water wisteria
A fast-growing stem plant that can provide substantial cover. Leave room for growth and prune rather than allowing a dense mass to crowd the fish.
Image: Krzysztof Ziarnek, Kenraiz / CC BY-SA.
Amazon frogbit
A larger-leaved floater that is easier to collect than duckweed. Thin its leaves and long roots as needed to preserve light and surface access.
Anubias barteri
Offers durable leaves but includes larger forms than nana. Check size before placing it in a small tank. Keep the rhizome exposed; see Anubias care.
Banana plant
The banana-shaped storage structures should remain exposed rather than buried deeply. Surface leaves can eventually shade other plants. Allow room for them and keep the feeding area open.
Aponogeton ulvaceus
A substantial bulb plant with wavy leaves. Better considered for a larger aquarium than a tiny betta setup. Account for its mature spread and possible dormancy.
Cryptocoryne parva
A small, slow foreground crypt. Allow time for establishment and avoid shading it heavily. It is not a quick route to an instant carpet.
Christmas moss
A branching moss for attachment to decor. Keep it trimmed and free of trapped waste. It still needs suitable light and maintenance.
Marsilea minuta
A small aquatic fern used in foreground planting. Confirm the species with the supplier and check its submerged growth requirements before expecting a dense carpet.
Pygmy chain sword
A small rooted rosette plant that spreads by runners. Give it suitable light and root nutrition, then thin unwanted runners rather than letting it occupy every open patch.
Image: Uccio D’Agostino / CC BY.
Cryptocoryne wendtii
A useful rooted plant available in several colors and sizes. It tolerates shade; brighter light does not automatically kill it. Avoid repeatedly uprooting a plant that is establishing.
Vallisneria
A ribbon-leaved background option. Species differ greatly in size. Keep the crown uncovered and remove unwanted daughter plants if runners crowd the layout.
Planting and maintenance
Remove pots and packing material as appropriate, inspect plants, and prepare them before adding them. Tissue-culture plants need their growing gel rinsed away. Our plant preparation guide explains the checks.
Soft artificial aquarium plants can also supply cover if kept clean and free of sharp edges. They do not take up nutrients. Whichever you use, watch whether the betta can move, rest, and reach the surface comfortably.
Sources: Tropica’s plant catalog; Aquarium Co-Op banana plant guidance.