How to Grow Ground Orchid / Purple Orchid

Ground Orchid / Purple Orchid

Spathoglottis species

flower

Spathoglottis is a genus of tropical terrestrial orchids native to Southeast Asia, Australia, and the Pacific islands. These hardy, warm-growing orchids are prized for their vibrant purple, pink, or white flowers and ease of cultivation compared to many orchid species. They are excellent choices for warm gardens, greenhouses, and indoor tropical settings.

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Example Ground Orchid / Purple Orchid timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Ground Orchid / Purple Orchid

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Ground Orchid / Purple Orchid blooms

    Mid-to-late summer

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Ground Orchid / Purple Orchid dates for your own zip code.

Growing Conditions

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Sun: Bright, indirect light; 50-70% shade in warm climates (morning sun is beneficial)
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Water: Keep consistently moist during growing season (spring-summer); reduce water in winter but never allow complete drying. Water at soil level to avoid leaf rot.
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Spacing: 12-18 inches
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Days to maturity: 12-18 months to first flowering from seedling
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Planting depth: Plant pseudobulbs 1 inch deep; tubers should be mostly at or slightly above soil surface

Soil

Type: Well-draining orchid bark mix or terrestrial orchid substrate
pH: 6.0-7.0
Amendments:
Orchid bark perlite coconut husk chips charcoal for drainage

Growing Zones

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Thrives in zones 10-11; can be grown outdoors year-round in warm climates

10a 10b 11a 11b

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Growth Stages

1

Dormancy/Rest

2-3 months (winter)

Plant appears to rest with minimal visible growth, existing pseudobulbs may lose some leaves

Reduce watering and fertilizing; provide cooler temperatures (55-65°F at night) to encourage flowering

2

Vegetative Growth

3-4 months (spring)

New shoots and leaves emerge from pseudobulbs; plant develops multiple growth points and new tubers form

Increase watering and fertilize every 2 weeks with balanced orchid fertilizer (10-10-10); maintain warm temperatures (65-75°F minimum)

3

Inflorescence Development

4-6 weeks

Flower spikes emerge from base of pseudobulbs or leaf axils; buds form and begin to swell

Maintain consistent moisture and warmth; apply bloom-boosting fertilizer (higher phosphorus); ensure 12+ hours of bright light daily

4

Flowering

6-12 weeks (can repeat bloom cycles)

Vibrant purple, pink, white, or bicolored flowers open sequentially on spike; multiple flowers bloom simultaneously and over time

Maintain humidity (50-70%), air circulation, and consistent moisture; avoid moving plant; flowers last 3-4 weeks per bloom

5

Post-Flowering/Maturation

4-6 weeks

Flowers drop; plant directs energy to developing mature pseudobulbs and foliage for next season

Continue regular watering and feeding; support new growth; gradually reduce inputs as plant enters rest period

Companion Planting

Plan your garden →

Plant with:

Other warm orchids (Dendrobium, Phalaenopsis) Tropical ferns Anthurium Tropical bromeliads Hosta (shade variety) Impatiens

Avoid planting near:

Cool-growing orchids (incompatible temperature requirements) Plants requiring dry dormancy Frost-sensitive companions in marginal zones

Common Pests

  • Increase humidity to 60-70%, spray with water, apply neem oil or horticultural miticide if severe

  • Remove with alcohol-soaked cotton swab; spray with insecticidal soap or neem oil; isolate plant

  • Scrape off manually; treat with horticultural oil or systemic insecticide

  • Allow soil surface to dry slightly between waterings; use sticky traps; apply sand layer on top of media

  • and

    Handpick, especially at night; use copper barriers or organic slug pellets; reduce excessive moisture

Uses

🍳

Edible Orchid Petals

Culinary

Spathoglottis flowers are occasionally used as delicate, ornamental garnishes in high-end cuisine and specialty desserts. The petals have a slightly sweet, neutral flavor and add visual appeal to plated dishes. [source]

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Cut Flower Arrangements

Household

The long-lasting flower spikes are excellent for fresh cut arrangements, both alone and mixed with tropical foliage or complementary flowers. Their vibrant colors add tropical elegance to indoor décor. [source]

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Floral Design & Events

Craft

Popular in tropical and Hawaiian-themed floral arrangements, wedding bouquets, and special event décor. The consistent blooming provides reliable flowers for florists and event designers. [source]

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Pollinator Garden Attraction

Wildlife

Spathoglottis flowers attract bees, butterflies, and other pollinators in tropical and subtropical gardens, supporting local pollinator populations while providing beautiful display flowers. [source]

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Traditional Asian Medicine

Medicinal

Some Spathoglottis species are used in traditional Chinese and Southeast Asian medicine as tonics and for various health applications, though scientific validation is limited. [source]

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

Harvest Tips

Spathoglottis are ornamental flowers grown for display, not harvest. Enjoy blooms on the plant or cut individual flower spikes when fully open using sterile scissors; place in water to extend vase life (7-14 days). Cut spikes can be used in floral arrangements.

Fun Facts

  • 🌱 Spathoglottis is one of the few orchid genera that thrives as a terrestrial plant (growing in ground soil) rather than as an epiphyte, making it more forgiving for home gardeners than many orchids.
  • 🌱 The name 'Spathoglottis' comes from Greek words meaning 'spathe' (a bract) and 'glottis' (tongue), referring to the distinctive lip structure of the flower.
  • 🌱 Spathoglottis can bloom multiple times per year in ideal warm conditions, producing successive flower spikes and providing nearly year-round color in tropical gardens.

Gardening Terms

New to gardening? Learn about terms used in this guide:

pH

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