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Plant care

Shark-Toothed Neoregelia (Shark Neoregelia) care

Neoregelia carcharodon

Also called Shark Neoregelia, Great White Bromeliad.

RHS H1cUSDA 11-12Pet-safeIndoor 50-80 cm wide

Watering rhythm

5-7days

Refill the central cup every 5-7 days; water the medium lightly when the top 3 cm is dry, roughly every 14 days

Light

Bright indirect light (just back from a sunny window)

Soil

Coarse bromeliad bark mix

Humidity

55-75%

Temp

18-28°C

Pet safety

Pet-safe

Mature size

50-80 cm wide

Care at a glance

Light

In the wild shark-toothed neoregelia grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Needs bright, filtered light to develop good colour and vigour. Morning sun is acceptable. Strong afternoon sun can bleach or burn the large leaf blades. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for refill the central cup every 5-7 days; water the medium lightly when the top 3 cm is dry, roughly every 14 days for shark-toothed neoregelia, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. The large water-holding tank must stay filled — use rainwater or filtered water and flush it completely once a week. Keep the potting medium barely moist and never let it become sodden.

Soil and pot

Shark-Toothed Neoregelia grows best in coarse bromeliad bark mix. A very open, fast-draining blend of large bark chips, perlite and a minimal amount of peat-free compost. Good aeration is critical for the coarse roots of this species. 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

Shark-Toothed Neoregelia sits happiest at around 55-75% humidity and 18-28°C (64-82°F). High humidity replicates its humid Brazilian forest habitat. A pebble tray, regular light misting or a room humidifier will keep leaf margins from browning. If you keep the room above 18 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 shark-toothed neoregelia sparingly. Feed monthly in spring and summer with a quarter- to half-strength balanced liquid fertiliser added to both the cup and the medium. Avoid overfeeding — bromeliads are light feeders. 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 shark-toothed neoregelia in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Brown serrated tipsSharply toothed margins can brown if humidity is very low or water is high in fluoride. Use rainwater and maintain humidity above 50%.
  • Cup rotStagnant water in the large central tank rots the base. Empty and refill weekly, especially in warm weather.
  • Scale insectsHard, limpet-like scales attach along the leaf midrib. Remove mechanically and treat with horticultural oil.
  • Pale, washed-out colouringInsufficient light prevents the characteristic reddish centre flush. Move to a brighter spot away from direct harsh sun.
  • Root decay in heavy mixThis large bromeliad has relatively few roots; heavy compost suffocates them. Always use a very open, bark-dominant medium.

Companion plants

Shark-Toothed Neoregelia pairs well with Neoregelia fosteriana, Aechmea fasciata, Billbergia nutans, and Anthurium clarinervium. 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

After the central rosette blooms and begins to die, pups emerge from the base. Detach when they are approximately one-third the size of the parent and pot individually in fresh bromeliad mix. 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

Shark-Toothed Neoregelia is pet-safe. Not individually listed by the ASPCA, but Neoregelia belongs to the Bromeliaceae family, members of which the ASPCA broadly considers non-toxic to cats and dogs. The serrated leaf margins present a physical scratch hazard to curious pets. 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.

Shark-Toothed Neoregelia care — frequently asked questions

What is the common name for Neoregelia carcharodon?

Neoregelia carcharodon is most commonly called Shark-Toothed Neoregelia, but it is also known as Shark Neoregelia, Great White Bromeliad. The names refer to the same species, so care instructions for Shark-Toothed Neoregelia apply identically to anything sold as Shark Neoregelia.

How much light does shark-toothed neoregelia need?

Shark-Toothed Neoregelia grows best in bright indirect light (just back from a sunny window). Needs bright, filtered light to develop good colour and vigour. Morning sun is acceptable. Strong afternoon sun can bleach or burn the large leaf blades.

How often should I water shark-toothed neoregelia?

Water shark-toothed neoregelia refill the central cup every 5-7 days; water the medium lightly when the top 3 cm is dry, roughly every 14 days. The large water-holding tank must stay filled — use rainwater or filtered water and flush it completely once a week. Keep the potting medium barely moist and never let it become sodden. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is shark-toothed neoregelia toxic to cats and dogs?

Shark-Toothed Neoregelia is pet-safe. Not individually listed by the ASPCA, but Neoregelia belongs to the Bromeliaceae family, members of which the ASPCA broadly considers non-toxic to cats and dogs. The serrated leaf margins present a physical scratch hazard to curious pets.

What USDA hardiness zone does shark-toothed neoregelia grow in?

Shark-Toothed Neoregelia is rated for USDA zone 11-12 (indoor-only in most climates) and RHS hardiness H1c. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Shark-Toothed Neoregelia deep-dive guides

Every aspect of shark-toothed neoregelia care, each with its own calibrated guide:

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Shark-Toothed Neoregelia qualifies for 6 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Shark-Toothed Neoregelia is also commonly called Shark Neoregelia or Great White Bromeliad.