How to Grow Prayer Plant / Calathea
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Prayer Plant / Calathea
Calathea spp. and Maranta leuconeura
flowerPrayer plants are tropical houseplants renowned for their stunning, intricately patterned foliage that displays dramatic leaf movements, closing upward at night in a prayer-like position. These low-growing plants are native to tropical rainforests and prefer warm, humid indoor environments. They are prized for ornamental foliage rather than flowers, though small blooms may occasionally appear.
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Example Prayer Plant / Calathea timeline · Pittsburgh, PA (Zone 6b)
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Plant Prayer Plant / Calathea
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Prayer Plant / Calathea blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Prayer Plant / Calathea dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 11-12 outdoors; grown as houseplants in all zones
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Get my Prayer Plant / Calathea timeline →Growth Stages
Establishment
3-4 weeksNewly acquired or propagated plant establishing roots and adjusting to indoor environment
Maintain high humidity (60-80%), consistent warmth (65-75°F), and avoid moving plant frequently. Water carefully and avoid fertilizing for 4-6 weeks
Vegetative Growth
Ongoing during growing season (spring-summer)Plant produces new leaves with characteristic patterning; foliage becomes fuller and more vibrant
Maintain bright indirect light, consistent moisture, and high humidity. Rotate plant weekly for even growth. Feed monthly with diluted balanced fertilizer (half-strength)
Nyctinastic Folding
Occurs daily throughout plant lifeLeaves fold upward at dusk in prayer-like position and unfold in morning; visible nightly movement
This is normal rhythmic behavior. Ensure adequate light during day so plants can photosynthesize fully before closing at night
Flowering (Rare Indoors)
2-4 weeksSmall, tuberous flowers in white, purple, or pink may emerge from leaf axils
Flowers are inconspicuous and secondary to foliage. Continue normal watering and humidity care. Remove spent flowers to redirect energy to leaves
Dormancy/Slow Growth
November-FebruaryPlant growth slows significantly in fall and winter; fewer new leaves emerge
Reduce watering slightly but maintain consistent moisture and humidity. Decrease fertilizing to once monthly or eliminate entirely. Keep temperatures above 60°F
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity to 60%+ (mites prefer dry air). Mist foliage regularly. Isolate plant and spray with neem oil or insecticidal soap every 5-7 days for 2-3 weeks. Inspect leaf undersides weekly
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Remove with cotton swab dipped in 70% isopropyl alcohol. Treat plant with neem oil or horticultural oil spray. Repeat every 7-10 days for several weeks. Isolate from other plants
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Physically remove with fingernail or soft brush. Treat with horticultural oil or neem oil. Apply systemic insecticide if severe. Monitor weekly and retreat as needed
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Reduce watering immediately. Repot into fresh, dry soil if roots are mushy and black. Improve drainage. Use well-draining potting mix. Allow soil to dry slightly between waterings. Consider fungicide application
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Remove affected leaves. Improve air circulation. Avoid wetting foliage when watering. Apply copper fungicide or neem oil if spreading. Isolate plant temporarily
Uses
Interior Decoration & Air Purification
HouseholdPrayer plants are popular houseplants valued for their striking, variegated foliage that adds tropical aesthetic to interiors. They help filter indoor air and are safe for homes with pets and children. [source]
Humidifier & Moisture Regulation
WildlifeThrough transpiration, these plants release moisture into the air, naturally increasing humidity in indoor spaces. This can benefit respiratory health and other humidity-loving plants nearby. [source]
Terrarium & Vivarium Plant
CraftPrayer plants thrive in enclosed or semi-enclosed terrariums and vivariums where high humidity is maintained. They create lush, tropical displays in glass containers or plant cases. [source]
Traditional Herbal Use
MedicinalIn Amazonian traditional medicine, some Calathea species have been used to treat wounds and inflammation, though scientific evidence is limited. Modern use is primarily ornamental. [source]
Edible Starch from Rhizomes
CulinarySome Calathea species produce edible rhizomes that are consumed locally in tropical regions (e.g., Calathea allouia produces edible tubers). The foliage itself is not typically eaten. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Prayer plants are ornamental foliage plants, not harvested for food or propagation typically. To propagate: Divide root clumps in spring when repotting. Cuttings with nodes can be rooted in water or moist sphagnum moss in 2-3 weeks. Prune back leggy stems to encourage bushier growth
Fun Facts
- 🌱 Prayer plants earned their name from the dramatic nyctinastic behavior where leaves fold together at night in a prayer-like position, driven by turgor pressure changes in the pulvinus (leaf joint). This movement is visible and audible to keen observers—you may actually hear a soft rustling as leaves fold each evening.
- 🌱 The intricate patterns on Calathea foliage are created through selective pigmentation and iridescence. In their native rainforest understory habitat, these patterns help them maximize the capture of dappled light and may also serve to confuse herbivores by breaking up the leaf outline.
- 🌱 Prayer plants are extremely sensitive to water quality. They originated in rainforests where soft, acidic water falls as mist and rain; tap water chlorine and fluoride can cause leaf tip burn. Collecting rainwater or allowing tap water to sit 24 hours before use significantly improves plant health.
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