Growli

Plant care

Silver Star Bromeliad (Lacerda's Earth Star) care

Cryptanthus lacerdae

Also called Silver Star Bromeliad, Lacerda's Earth Star.

RHS H1aUSDA 11–12Pet-safeIndoor 8–15 cm tall

Watering rhythm

7-10days

Every 7–10 days

Light

Bright indirect light (just back from a sunny window)

Soil

Coarse, fast-draining bromeliad or terrarium mix

Humidity

60–80%

Temp

18–30°C

Pet safety

Pet-safe

Mature size

8–15 cm tall

Care at a glance

Light

In the wild silver star bromeliad 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. Does best in bright indirect light, which intensifies the silver banding and metallic sheen. An east-facing window or a position 1–2 m from a south or west window is ideal. More so than many Cryptanthus species, C. lacerdae tolerates brighter conditions without bleaching, but avoid sustained direct afternoon sun. 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 every 7–10 days for silver star bromeliad, 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. Water the potting medium when the top 2–3 cm is dry; C. lacerdae absorbs through roots, not a central cup. Use tepid, low-fluoride water (filtered or rainwater preferred). Reduce watering in winter. Do not allow the plant to sit in standing water as roots rot readily in soggy substrate.

Soil and pot

Silver Star Bromeliad grows best in coarse, fast-draining bromeliad or terrarium mix. A blend of fine orchid bark, coir, and perlite (1:1:1) provides good drainage and aeration. Shallow pots or terrarium planting suit the shallow root system. Avoid dense, peat-heavy composts that stay wet. A thin layer of sphagnum moss around the base helps maintain local humidity. 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

Silver Star Bromeliad sits happiest at around 60–80% humidity and 18–30°C (64–86°F). Requires high humidity to perform well. Terrariums maintain ideal conditions; for open rooms, use a pebble tray, humidifier, or regular misting. Low humidity causes the leaf tips and margins to brown and the metallic sheen to dull. Keep away from heating vents. If you keep the room above 18–30°C 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 silver star bromeliad sparingly. Apply a quarter-strength balanced liquid fertiliser to the substrate every 4–6 weeks in spring and summer. Avoid strong concentrations that can cause root burn or mark the foliage. Withhold feeding in autumn and winter when growth is minimal. 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 silver star bromeliad in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Dull or faded silver bandingInsufficient light is the most common cause. Move to a brighter position with strong indirect light. Very low light causes the characteristic metallic silver bands to fade to dull grey-green. Correct within a few weeks by improving light levels.
  • Brown leaf tips and marginsLow humidity and fluoride or chlorine in tap water are the primary culprits. Switch to rainwater or filtered water and increase humidity via a pebble tray or humidifier. Excess fertiliser salts can also cause marginal scorch.
  • Root rotDense or waterlogged substrate causes roots to blacken and the plant to collapse. Repot into a faster-draining mix, trim dead roots with sterile scissors, and allow the medium to dry more between waterings. Good pot drainage is essential.

Propagation

Detach basal pups once they are at least one-third the size of the mother plant (typically 5–10 cm across). Cut close to the base with a sterilised knife, let the wound callous for an hour, then pot into moist bromeliad mix. Keep warm and humid until roots establish (4–8 weeks). 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

Silver Star Bromeliad is pet-safe. Cryptanthus lacerdae is in Bromeliaceae, which the ASPCA lists as non-toxic to cats and dogs. The species is not individually ASPCA-listed, but no toxic principle has been identified in this genus, and ASPCA bromeliad guidance supports a pet-safe classification. 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.

Silver Star Bromeliad care — frequently asked questions

What is the common name for Cryptanthus lacerdae?

Cryptanthus lacerdae is most commonly called Silver Star Bromeliad, but it is also known as Silver Star Bromeliad, Lacerda's Earth Star. The names refer to the same species, so care instructions for Silver Star Bromeliad apply identically to anything sold as Lacerda's Earth Star.

How much light does silver star bromeliad need?

Silver Star Bromeliad grows best in bright indirect light (just back from a sunny window). Does best in bright indirect light, which intensifies the silver banding and metallic sheen. An east-facing window or a position 1–2 m from a south or west window is ideal. More so than many Cryptanthus species, C. lacerdae tolerates brighter conditions without bleaching, but avoid sustained direct afternoon sun.

How often should I water silver star bromeliad?

Water silver star bromeliad every 7–10 days. Water the potting medium when the top 2–3 cm is dry; C. lacerdae absorbs through roots, not a central cup. Use tepid, low-fluoride water (filtered or rainwater preferred). Reduce watering in winter. Do not allow the plant to sit in standing water as roots rot readily in soggy substrate. 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 silver star bromeliad toxic to cats and dogs?

Silver Star Bromeliad is pet-safe. Cryptanthus lacerdae is in Bromeliaceae, which the ASPCA lists as non-toxic to cats and dogs. The species is not individually ASPCA-listed, but no toxic principle has been identified in this genus, and ASPCA bromeliad guidance supports a pet-safe classification.

What USDA hardiness zone does silver star bromeliad grow in?

Silver Star Bromeliad is rated for USDA zone 11–12 and RHS hardiness H1a. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Silver Star Bromeliad deep-dive guides

Every aspect of silver star bromeliad care, each with its own calibrated guide:

Featured in these plant shortlists

Silver Star Bromeliad qualifies for 8 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

  • Best pet-safe houseplantsHouseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
  • Best plants for a north-facing windowHouseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
  • Best humidity-loving houseplantsHouseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
  • Best pet-safe plants for bright lightNon-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
  • Best small & tabletop houseplantsCompact houseplants that stay under about 40 cm — desk, shelf and windowsill plants that never outgrow a small space.
  • Best cat-safe plantsHouseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
  • Best dog-safe plantsHouseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
  • Best small pet-safe plantsCompact, tabletop houseplants that are also ASPCA non-toxic to cats and dogs — safe greenery for a desk or shelf.
  • Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Silver Star Bromeliad is also commonly called Silver Star Bromeliad or Lacerda's Earth Star.