Best Soil for Anthuriums: What This Epiphytic Aroid Needs
The quick answer
The best soil for an anthurium is a chunky, airy, fast-draining aroid mix. Anthuriums are epiphytes that grow on tree trunks in the wild, with their roots clinging to bark and exposed to air, so they rot quickly in dense potting soil. A blend of bark, perlite, coco chips, and charcoal drains fast, holds light moisture, and gives the roots the airflow they evolved for.
Recommended: Molly’s Aroid Mix
Anthuriums are aroids, so Molly’s Aroid Mix is a direct match: chunky bark, perlite, and coco chips that drain in seconds while holding the light moisture anthurium roots like.
Why anthuriums need a chunky, airy soil
In their native rainforests, anthuriums grow as epiphytes and semi-epiphytes, anchoring to tree bark with thick aerial roots that catch rain and dry quickly in between. They are built for air and fast drainage, not for sitting in saturated ground.
Put an anthurium in regular potting soil and the dense, water-holding medium suffocates those roots. The plant stops pushing new leaves, the lower leaves yellow, and the roots blacken and rot. The fix is almost always a chunkier, faster-draining mix rather than watering less.
What goes into a good anthurium mix
- Bark (40-50%). Orchid-grade fir bark for the chunky, air-filled structure anthurium roots grip.
- Perlite (20-30%). Permanent air pockets and fast drainage.
- Coco chips or coir (10-20%). A light moisture buffer so the mix doesn’t dry out instantly.
- Charcoal (5-10%). Keeps the mix fresh and filters salts.
- Worm castings (small amount, optional). Gentle nutrients for steady blooms and leaves.
Comparing your options
| Option | Cost / 5 qt | Effort | Result |
|---|---|---|---|
| Box-store potting soil | $5–$10 | Low | Too dense. Suffocates the epiphytic roots and causes rot. |
|
DIY blend bark + perlite + coir + charcoal |
$20–$35 | Medium | Excellent if you balance the chunk and moisture. |
| Other boutique soil brands | $30+ / 4 qt | None | Often a good blend, but commonly $7 to $10 per dry quart, roughly double Molly’s per-quart price. |
|
★ Recommended Molly’s Aroid Mix |
~$22 ($4.40/qt) | None | Chunky, fast-draining, made for aroids like the anthurium. |
Signs your anthurium is in the wrong soil
- Yellowing lower leaves. Often root suffocation in dense, wet soil.
- Blackened, mushy roots when you unpot it. Healthy anthurium roots are firm and pale.
- No new leaves or flowers in the growing season. The roots aren’t healthy.
- Soil still wet a week after watering. The mix holds far too much.
- A sour smell from the pot. Waterlogged, airless soil.
How to repot an anthurium
- Water a day or two before. Damp roots release more easily and recover faster.
- Ease the plant out and gently tease the chunky mix from the roots.
- Trim any black, mushy roots with clean scissors.
- Choose a snug pot with drainage. Anthuriums like to be a little tight; size up just 1 to 2 inches.
- Layer in chunky aroid mix, settling the plant at the same depth, and tuck exposed aerial roots loosely in or leave them out.
- Water thoroughly once, let it drain, and keep it in bright indirect light.
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Frequently asked questions
Give your anthurium the airy roots it wants
A chunky, fast-draining aroid mix that drains in seconds, exactly what an epiphyte needs.
Shop Molly’s Aroid Mix
