How to Grow Orchid (Epiphytic)

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Orchid (Epiphytic)

Orchidaceae family (various genera including Phalaenopsis, Dendrobium, Cattleya)

flower

Epiphytic orchids are plants that naturally grow on tree branches and other surfaces in tropical and subtropical forests, deriving moisture and nutrients from the air and organic debris rather than soil. These orchids have specialized aerial roots with a spongy coating (velamen) that absorbs moisture and nutrients. They produce spectacular, long-lasting flowers in a wide range of colors and are popular both as houseplants and in orchid collections.

Looking for a specific variety?

Phalaenopsis Dendrobium Cattleya Oncidium Paphiopedilum Vanda

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Example Orchid (Epiphytic) timeline · Pittsburgh, PA (Zone 6b)

Plant Orchid (Epiphytic)
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
First Orchid (Epiphytic) blooms
Mid-to-late summer

Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Orchid (Epiphytic) dates for your own zip code.

Growing Conditions

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Sun: Bright indirect light, 12-16 hours daily; some varieties tolerate 6-8 hours; avoid harsh direct afternoon sun which can burn foliage

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Water: Water thoroughly when bark medium becomes nearly dry; typically every 7-10 days depending on humidity and medium. Epiphytic orchids prefer drying between waterings. Use room-temperature, filtered, or distilled water. Humidity should be 50-80%. Mist aerial roots regularly in dry climates.

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Spacing: Variable - mount on bark or cork slabs, or space 8-12 inches apart in containers to allow air circulation inches

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Days to maturity: 1-3 years to first blooms from young plantlets; mature plants bloom annually

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Planting depth: Shallow - rhizome at or just above medium surface; do not bury deep. When mounting, secure with sphagnum moss and fishing line or clips.

Soil

Type: Orchid bark mix (no traditional soil) - chunky, well-draining medium of fir bark, sphagnum moss, charcoal, and perlite

pH: 6.0-7.0

Amendments:

Sphagnum moss Fir or pine bark Charcoal (activated) Perlite Cork pieces

Growing Zones

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Zones 9b-11 outdoors; can be grown indoors year-round in cooler climates

9b 10a 10b 11a 11b

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Growth Stages

Juvenile/Seedling

6-18 months

Tiny plants with 2-4 small leaves and minimal root development. Very delicate.

Keep in humid environment (70-80%). Use smaller bark pieces. Water more frequently but gently. Provide lower light initially.

Vegetative Growth

1-2 years

Plant develops 4-8+ leaves, longer stems, and a robust root system with visible aerial roots. No flower buds visible.

Increase light gradually. Allow slight drying between waterings. Provide warm temperatures (65-75°F nights, 75-85°F days). Monthly dilute fertilizer during growing season.

Pre-flowering/Maturation

2-4 weeks

Plant reaches adult size with fully developed pseudobulbs (in some types) or thick stems. May show slight slowing of new leaf growth.

Introduce a cooler, drier rest period (5-10°F temperature drop, reduced water) to trigger blooming. Reduce nitrogen fertilizer, increase phosphorus and potassium.

Flowering

4-16 weeks depending on variety

Flower spikes emerge from nodes or leaf axils. Buds open sequentially over weeks or months, displaying spectacular blooms in various colors, patterns, and shapes.

Maintain humidity and bright light. Keep air moving with gentle fan circulation. Avoid moving plant. Water when medium dries; do not overwater blooming plants. Support long spikes with stakes if needed.

Post-flowering/Rest

2-8 weeks

Flowers fade and drop. Plant enters semi-dormant phase with minimal new growth.

Reduce watering slightly. Continue bright light. Maintain cooler temperatures if possible. Allow medium to dry more between waterings. Resume normal care as new growth appears.

Companion Planting

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Plant with:

Bromeliads Tillandsia (air plants) Ferns (tender varieties) Pothos Anthuriums Other orchid species

Avoid planting near:

Ethylene-producing plants (ripening fruit, cut flowers) Heavy feeders that require frequent watering (waterlogged environments) Drafty vents and heating/cooling sources Dense shade-loving dense foliage competitors

Common Pests

Spray with 70% isopropyl alcohol or insecticidal soap; repeat every 7-10 days. Remove visible insects with cotton swab dipped in alcohol.
Increase humidity to 60%+. Spray with water to dislodge. Use miticide or neem oil if severe. Repeat every 5-7 days.
Remove manually with soft brush or alcohol-soaked cotton swab. Apply horticultural oil or insecticidal soap. Treat every 10-14 days for 3-4 weeks.
Reduce watering frequency and standing water. Use yellow sticky traps. Apply diatomaceous earth to bark surface or use gnat-specific soil drench.
Improve air circulation with fan. Reduce humidity slightly. Remove affected areas with sterile knife. Repot in fresh medium if severe. Prevent by avoiding water on foliage and crown.

Uses

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Vanilla Extract

Culinary

Vanilla orchids (Vanilla planifolia) produce the vanilla bean pods used to create vanilla extract and flavoring, one of the world's most expensive spices by weight. The orchid flowers are beautiful but the economic value lies in the fermented seed pods. [source]

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Cut Flower Arrangements

Craft

Epiphytic orchid blooms are prized for high-end floral arrangements and wedding décor due to their exotic appearance, longevity, and wide color range. A single bloom can remain fresh for 2-6 weeks, making them economical for special events. [source]

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Traditional Medicine

Medicinal

Certain orchid species have been used in Traditional Chinese Medicine and Ayurveda for immune support, anti-inflammatory, and antioxidant properties. Dendrobium species are particularly valued in TCM. [source]

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Air Purification & Biophilic Design

Household

While all plants improve air quality to some degree, epiphytic orchids add aesthetic value and humidity to indoor spaces. Their presence is associated with improved mental well-being through biophilic design principles. [source]

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Pollinator Attraction

Wildlife

In tropical settings where orchids grow outdoors, they attract specialized pollinators including moths, bees, and orchid-specific wasps through fragrance and nectar. Some orchids have evolved precise pollinator-specific flower shapes. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Orchids are ornamental cut flowers. Cut spikes for arrangements after flowers have been open for 1+ week (they'll last longer). Cut above a dormant node to encourage secondary flowering on some varieties. Leave at least 2-3 leaves on the plant. Cut spikes can last 2-6 weeks in water.

Fun Facts

🌱 Epiphytic orchids evolved to live on tree branches without harming the host tree—a relationship called 'commensalism.' Their aerial roots have a specialized spongy tissue (velamen) that can absorb moisture from fog, rain, and humid air, allowing them to thrive without soil.
🌱 Orchids are one of the largest flowering plant families with 25,000-30,000 species and counting. Some orchids can live 50-100+ years, and documented specimens have bloomed for over 60 consecutive years in cultivation.
🌱 Many orchids rely on specific pollinators and have evolved extreme specialization; some Ophrys orchids mimic female insects so precisely that males attempt to mate with the flowers, inadvertently pollinating them. This deception strategy is so effective that some species have no natural pollinator and must be hand-pollinated.

Gardening Terms

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