Earth Star / Starfish Plant
Cryptanthus bivittatus
description
Earth Star is a small terrestrial bromeliad grown for striped star-shaped foliage.
benefits
- Pet-friendly, non-toxic to animals
- Suitable for containers
How to care for Earth Star
sunlight
Earth Stars grow on the shaded floor of Brazilian forests, where light is filtered through leaves. Give yours bright, indirect light indoors to keep its striped rosette compact and colorful.
Bright indirect light
Place near an east window, or a few feet back from a bright south or west window behind a sheer curtain. Direct afternoon sun can bleach or scorch the leaves.
Medium indirect light - tolerated
It can manage a brighter room away from the window, but growth may slow and striped or pink forms can lose color. Move it closer to filtered light if new leaves emerge mostly green or the rosette stretches.
watering
Spring - early autumn
Water thoroughly about every 5-8 days when the top 1-2 cm of mix feels dry. Let excess drain away after watering.
Cooler or lower-light months
Expect to water roughly every 10-14 days. Check that the upper third of the mix has dried, while the root ball is not completely dry, before watering again.
Use these intervals as a starting point. Bright light, warmth, small pots, and a fast-draining mix dry faster, while cool rooms, low light, and dense soil slow drying.
humidity
Preferred humidity
Earth Stars grow on the forest floor in Brazil, where air is often gently humid. Average home humidity around 40-50% is usually fine, but they look best with moderately humid air and good airflow.
Very dry air can cause brown leaf tips, crisp edges, and tighter curling foliage, especially near heating or air conditioning vents.
- Group it with other plants or use a small humidifier nearby.
- Keep it away from radiators, forced-air vents, and hot sunny windows.
- Use a pebble tray only as a small local boost, not as the main solution.
temperature
Preferred range
Winter minimum
Earth Star comes from warm Brazilian forest conditions, so it prefers steady room warmth. Keep it above 15°C (59°F), especially when the potting mix is damp, and protect it from sudden temperature swings.
nutrition
March - August
Feed about once a month while your Earth Star is making new leaves, using a balanced liquid houseplant fertilizer at half the label strength. Apply it to already-moist potting mix. Stop feeding in winter unless it is actively growing in warm, bright conditions.
Nitrogen
Nitrogen supports the compact foliage growth Earth Stars are grown for. A lightly diluted balanced fertilizer provides enough without pushing soft, weak growth.
Potassium
Potassium helps support sturdy growth and overall plant resilience. It is normally supplied by a balanced fertilizer, so extra supplements are unnecessary.
soil
Airy, moisture-retentive soil
Earth Star is a terrestrial bromeliad with fine roots that prefer steady light moisture but quickly decline in dense, soggy compost. Use a loose mix of potting soil or coco coir with orchid bark and perlite or pumice.
pH 5,5 - 6,5
This is mildly acidic, similar to leaf-litter soil on a forest floor. Most houseplant or bromeliad mixes fall in this range, especially when blended with bark or coco coir.