Anthurium crystallinum, the crystal anthurium, is grown for its large, velvety leaves with pale veins. It needs the same basic care as other velvet anthuriums: bright indirect light, an airy mix, warmth and humid air. What sets it apart is size. Large velvet leaves need room, steady conditions and dry surfaces, or they mark, scorch or spot.
Species-specific public sources are limited. The RHS plant entry, NC State’s genus page and UF/IFAS give species details. Watering, feeding and problem advice comes from guidance for the genus Anthurium, much of it written for the flowering flamingo flower. We label which is which.
Crystallinum or clarinervium?
These two are often confused. Our Anthurium clarinervium guide covers the smaller species.
| Feature | A. crystallinum | A. clarinervium |
|---|---|---|
| Origin | Panama to Colombia (RHS) | Mexico (RHS) |
| Leaf shape | Broadly elliptic or ovate (RHS); heart-shaped (NC State) | Reflexed, deeply lobed (RHS) |
| Leaf length | To 45 cm (18 in) (RHS) | To 13 cm (5 in) (RHS) |
| Veins | White main veins (RHS); pale green or silvery-white (NC State) | Pale green-white (RHS) |
| Berries | Purplish (NC State) | Orange (NC State) |
| Diseases listed | Leaf spot and root rot (RHS) | Root rot (RHS) |
| Care | Same RHS cultivation advice for both |
Sizes vary between sources. The RHS lists crystallinum at 0.1–0.5 m (4–20 in) tall. UF/IFAS gives up to 90 cm (36 in) tall and 60–90 cm (24–36 in) across. Leave room for long leaves to hang without rubbing a wall or window.
Crystal anthurium care at a glance
| Factor | What the sources say | Level |
|---|---|---|
| Light | Bright, indirect light | Species (RHS) |
| Water | Freely from spring to autumn; sparingly in winter | Species (RHS) |
| Mix | 2 parts ericaceous peat-free compost, 1 part grit, 1 part orchid bark | Species (RHS) |
| Humidity | High; tray of moist gravel | Species (RHS). Above 50% (UF/IFAS, genus) |
| Temperature | Keep above 18 °C (64 °F) | Species (RHS) |
| Feeding | Orchid fertiliser every two weeks, spring to autumn | Species (RHS) |
| Propagation | Division, stem or rhizome cuttings, offsets; seed at 24–27 °C (75–81 °F) | Species (RHS) |
| Problems | Mealybugs, scale, leaf spot, root rot | Species (RHS) |
Warmth and steady conditions
The RHS says to keep crystallinum above 18 °C (64 °F). For the genus, NC State gives 18–29 °C (65–85 °F). NC State’s flamingo flower page says anthuriums do not tolerate cold draughts or sudden temperature changes. UF/IFAS recommends 21–29 °C (70–85 °F) indoors and warns that air below 13 °C (55 °F) can cause damage. It also says to keep plants away from heat or cold from appliances.
In practice, keep the plant back from cold winter glass and out of the path of heaters and air-conditioning vents. Large leaves pressed against a cold window are the ones that suffer first.
Light
The RHS recommends bright, indirect light. NC State says direct sunlight can scorch anthurium leaves, and that too little light slows growth. UF/IFAS describes two light symptoms for the genus: bleached leaf centers with brown tips from excess light, and broad, dry, tan blotches from sunburn. Large, flat crystallinum leaves catch a lot of sun, so filter a bright window rather than placing the plant in direct rays.
Watering
The RHS says to water freely from spring to autumn and sparingly in winter. For the genus, UF/IFAS says to let indoor plants dry slightly between waterings, then water thoroughly. NC State says to water when the soil is dry to the touch, preferably with rainwater or purified water.
The RHS lists root rot from overwatering as a risk for this species. A large plant in a heavy mix stays wet a long time, so the mix matters as much as the watering can. Our guides on how often to water an anthurium and overwatered anthurium cover the checks.
Mix and pot
The RHS recommends an acidic potting mix of two parts ericaceous peat-free compost, one part horticultural grit and one part orchid bark. UF/IFAS describes well-aerated mixes of equal parts peat, perlite and bark for the genus. Choose a pot that fits the root ball, with drainage holes, and repot in spring or summer.
Humidity
The RHS recommends high humidity from a tray of moist gravel or pebbles. For the genus, UF/IFAS says humidity should stay above 50%, or the leaves lose their shiny texture and may die off. NC State says anthurium leaf tips turn brown when humidity is too low. For a plant this large, a room humidifier is usually more practical than an enclosed cabinet; see our houseplant humidity guide.
Keeping the leaves clean and spot-free
This is where crystallinum needs more attention than smaller anthuriums. The RHS lists leaf spot among its possible diseases. For anthuriums in general, NC State says leaf spots occur when air circulation is poor or the foliage gets wet. Clemson Extension adds that fungal leaf spots are small brown spots with yellowish margins, and recommends good air circulation and avoiding splashing the foliage.
- Water the mix, not the leaves. Pour at the base so water does not sit on the velvet surface.
- Keep air moving. Do not crowd the plant against others or a wall.
- Dust gently. NC State recommends wiping anthurium leaves periodically. Use a soft, damp cloth and support the leaf from below, then let it dry.
- Remove dead leaves at the base. The RHS says no pruning is needed beyond this.
UF/IFAS warns not to let fertilizer splash onto anthurium foliage, as it leaves a grey residue.
Feeding
The RHS recommends an orchid fertiliser every two weeks from spring to autumn. UF/IFAS says overfeeding indoors builds up salts and causes leaf edge or tip injury. Clemson says white or grey crusty deposits on the mix or pot rim show salt build-up. Flush the pot with plain water and feed less if you see them.
Propagation
The RHS lists division, stem or rhizome cuttings, and offsets in spring or summer. It adds seed, sown at 24–27 °C (75–81 °F) as soon as ripe. Division is easiest at repotting: keep roots and at least one growing point on each piece. UF/IFAS notes that almost all commercial anthuriums are now produced by tissue culture. Tissue-culture plantlets need a gradual move to room air; see tissue-culture anthuriums.
Problems and what to check
| What you see | Likely cause | Written guide |
|---|---|---|
| Brown spots with yellow margins | Fungal leaf spot; wet leaves, poor airflow (RHS, NC State, Clemson) | Anthurium brown spots |
| Broad tan blotches | Sunburn (UF/IFAS) | Anthurium brown spots |
| Yellowing, wilting, wet mix | Overwatering, root rot (RHS) | Overwatered anthurium |
| Brown tips | Dry air (NC State) or salts (UF/IFAS) | Anthurium problems |
| Stippling, fine webbing | Mites (UF/IFAS, genus) | Spider mites on anthurium |
| Cottony tufts, brown bumps | Mealybugs or scale (RHS) | Anthurium problems |
Is Anthurium crystallinum safe for pets?
No. The RHS lists it as harmful if eaten and a skin and eye irritant, and recommends gloves when handling it. The ASPCA has no separate crystallinum entry. Its flamingo flower entry lists anthurium as toxic to dogs, cats and horses, from insoluble calcium oxalates, causing oral irritation, drooling, vomiting and difficulty swallowing. For other species, see our anthurium varieties guide and the anthurium hub.
References
- Royal Horticultural Society: Anthurium crystallinum
- NC State Extension Gardener Plant Toolbox: Anthurium
- NC State Extension Gardener Plant Toolbox: Anthurium andraeanum
- UF/IFAS Extension FPS-42, K. Graves et al.: Anthurium spp.: Tailflower, Flamingo Flower, Anthurium
- UF/IFAS Extension EP159, J. Chen et al.: Cultural Guidelines for Commercial Production of Interiorscape Anthurium
- Clemson Cooperative Extension HGIC 2251: Houseplant Diseases & Disorders
- ASPCA Animal Poison Control Center: Flamingo Flower