← Plant Guides

How to Grow Tainung No. 4 Papaya

Wikimedia Commons

Tainung No. 4 Papaya

Carica papaya 'Tainung No. 4'

tree

Tainung No. 4 is a dwarf papaya cultivar developed in Taiwan, characterized by compact growth reaching 4-6 feet tall and producing sweet, orange-fleshed fruit. This hermaphroditic variety is self-fertile and produces fruit prolifically with minimal space requirements. It is highly prized for home gardens and commercial cultivation in tropical and subtropical climates.

When should you plant Tainung No. 4 Papaya in your zone?

Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.

Get my Tainung No. 4 Papaya timeline →

Example Tainung No. 4 Papaya timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Tainung No. 4 Papaya

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Tainung No. 4 Papaya

    Around Nov 8

    ≈ 270 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Tainung No. 4 Papaya dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 8+ hours daily; tolerates light afternoon shade in hottest climates
💧
Water: Water deeply and regularly, maintaining consistently moist but not waterlogged soil. During establishment (first 3-4 months), water every 2-3 days. Once established, reduce to 1-2 inches per week depending on rainfall. Reduce watering in winter dormancy.
📏
Spacing: 36 inches
📅
Days to maturity: 270-365 days from planting to first fruit
🌱
Planting depth: Plant transplants at same depth as container; sow seeds 1/4 inch deep

Soil

Type: Well-draining sandy loam to loamy soil with high organic matter
pH: 6.0-6.8
Amendments:
Compost or aged manure (2-3 inches worked into planting hole) Perlite or sand for drainage if soil is clay-heavy Balanced slow-release fertilizer (10-10-10 NPK)

Growing Zones

Find your zone →

Thrives in USDA zones 10-11; can be grown in zone 9 with winter protection

10a 10b 11a 11b

Sign up free to see if Tainung No. 4 Papaya grows in your zone — and get a personalized planting timeline.

Get my Tainung No. 4 Papaya timeline →

Growth Stages

1

Seedling

3-4 weeks

Small plants with oval cotyledons and first true leaves appearing; fragile seedlings 2-4 inches tall

Keep soil consistently moist but not waterlogged. Provide bright indirect light indoors. Maintain temperatures 70-80°F. Avoid transplanting shock by hardening off gradually before moving outdoors.

2

Vegetative Growth

2-3 months

Rapid stem elongation with increasingly divided palmate leaves; plant reaches 12-24 inches tall

Apply balanced fertilizer every 2 weeks. Water regularly. Stake or support if needed. Monitor for spider mites in dry conditions. Ensure full sun exposure.

3

Flowering

Variable; begins around 4-6 months, then blooms continuously in warm climates

Small yellow flowers appear at leaf axils; plant continues growing taller while producing flowers clusters

Increase potassium application to support fruiting. Continue consistent watering. Reduce nitrogen to prevent excessive vegetative growth. Tainung No. 4 is self-fertile and does not require cross-pollination.

4

Fruiting

8-12 weeks per harvest cycle; multiple cycles per year in tropics

Small marble-sized fruits develop at leaf axils, rapidly enlarging and ripening from green to yellow-orange over 6-10 weeks

Maintain consistent watering during fruit development. Apply potassium-rich fertilizer (0-0-50 K or similar) every 3-4 weeks. Remove diseased or deformed fruits. Ensure adequate light reaches developing fruits.

5

Harvest & Reproduction

Ongoing; productive 3-5+ years

Fruits reach 1-2 pounds, yielding to gentle pressure; plant continues flowering and fruiting simultaneously

Pick fruit at first blush of yellow; it ripens fully off the tree. Remove harvested fruit carefully to avoid damaging plant. Prune lower yellowing leaves. Continue fertilizing and watering for continuous production.

Companion Planting

Plan your garden →

Plant with:

Basil Marigold Guava Passion fruit Coconut palm Pineapple Banana

Avoid planting near:

Brassicas (cabbage, broccoli) Fennel Black walnut Avocado (different water/nutrient needs)

Common Pests

  • Spray with water to dislodge; use insecticidal soap or neem oil every 7-10 days; increase humidity; remove heavily infested leaves

  • Apply insecticidal soap or horticultural oil; use alcohol-soaked cotton swabs on visible clusters; encourage natural predators like ladybugs

  • Remove fallen and overripe fruit immediately; use fruit fly traps; install fine netting around ripening fruit; maintain sanitation

  • Prune heavily infested branches; apply horticultural oil in dormant season; spray with insecticidal soap during growing season

  • Use yellow sticky traps; spray with neem oil or insecticidal soap; encourage parasitic wasps; remove heavily infested leaves

Uses

🍳

Fresh fruit and smoothies

Culinary

Tainung No. 4 papayas are sweet, orange-fleshed, and excellent eaten fresh or blended into smoothies and tropical beverages. The small to medium fruit size (1-2 pounds) makes them ideal for households and individual consumption. [source]

🍳

Salads and desserts

Culinary

Ripe fruit is used in fresh fruit salads, salsas, and as a garnish for desserts. The sweet flavor pairs well with lime juice, coconut, and fresh herbs like mint and basil. [source]

💊

Digestive enzyme and wellness

Medicinal

Papaya contains papain, a powerful digestive enzyme that aids protein digestion and reduces bloating. Both ripe fruit and latex from unripe fruit have been used traditionally to support digestive health. [source]

🏠

Natural enzyme for meat tenderizing

Household

Raw papaya latex and unripe fruit contain proteases used to tenderize meat in marinades. A simple paste of unripe papaya can be applied to tougher cuts before cooking. [source]

🦋

Pollinator and bird food source

Wildlife

Papaya flowers attract bees, butterflies, and other pollinators, supporting local ecosystems. Ripe fruit is eaten by birds and small mammals, making it valuable for wildlife gardens. [source]

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

Harvest Tips

Harvest fruit when it develops the first blush of yellow color at the blossom end; it will ripen fully within 1-2 days at room temperature. Tainung No. 4 produces continuously in warm climates, yielding 20-30 fruits per plant annually. Fruit keeps 3-5 days at room temperature or 10-14 days refrigerated. Cut fruit with 1/4 inch of stem attached to prevent sap loss.

Fun Facts

  • 🌱 Tainung No. 4 was developed at the Taiwan Agricultural Research Institute and is self-fertile (hermaphroditic), producing both male and female flowers on the same plant—unlike many papaya varieties that require separate male plants for pollination.
  • 🌱 The dwarf growth habit makes it ideal for containers, home gardens, and space-limited cultivation, producing fruit at a lower height than standard papaya varieties (4-6 feet vs. 15-20+ feet).
  • 🌱 Tainung No. 4 can produce fruit year-round in tropical climates, with multiple flowering and fruiting cycles occurring simultaneously on the same plant, yielding fresh papayas continuously.

Gardening Terms

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

Annual Cultivar Full Sun Hardening Off pH Pollination Transplant True Leaves
Shop Tainung No. 4 Papaya plants and related plants at Plant Addicts →

Join 30,000 gardeners planning their gardens with LizPlants.

Get your personalized Tainung No. 4 Papaya planting timeline

Tell us your zip code and we'll calculate exactly when to start Tainung No. 4 Papaya seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.

Get my Tainung No. 4 Papaya timeline →