How to Grow Nashi Fruit 20th Century
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Nashi Fruit 20th Century
Pyrus pyrifolia 'Twentieth Century'
fruitThe 20th Century is a popular Asian pear cultivar known for its golden-yellow, round fruit with a crisp, juicy, sweet flesh and mild flavor. This deciduous tree produces medium-sized pears (3-4 inches diameter) that ripen in late summer to early fall. It's one of the most widely grown nashi varieties worldwide due to its consistent productivity and excellent eating quality.
When should you plant Nashi Fruit 20th Century in your zone?
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Example Nashi Fruit 20th Century timeline · Pittsburgh, PA (Zone 6b)
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Plant Nashi Fruit 20th Century
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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Harvest Nashi Fruit 20th Century
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Nashi Fruit 20th Century dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 6-9; can grow in zone 5b with winter protection
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Get my Nashi Fruit 20th Century timeline →Growth Stages
Establishment (Year 1-2)
2 yearsYoung tree focuses on root and branch development. Minimal flowering; tree grows 12-24 inches per year.
Remove any flowers that appear in first year. Stake for support. Maintain consistent moisture. Apply 2-3 inches of mulch. Prune to establish central leader framework.
Pre-flowering (Year 2-3)
1-2 yearsTree develops more branching and establishes canopy structure. Some flower buds may appear late in season.
Continue light pruning to shape tree. Remove competing branches. Avoid excessive nitrogen fertilization which delays fruiting. Thin any developing flower buds.
Flowering
2-3 weeksIn early spring (March-April, depending on zone), dense clusters of white-pink flowers bloom on 2-year-old wood. Flowers are self-incompatible.
Ensure pollinator activity or hand-pollinate with compatible variety pollen (Shinseiki or Hosui work well). Provide bee-friendly environment. Protect flowers from late frosts with frost cloth if needed.
Fruit Development & Thinning
4-6 weeksSmall green fruits develop rapidly. At walnut-sized stage (4-6 weeks after bloom), aggressive thinning is critical.
Thin to one fruit per cluster, spacing 6 inches apart along branches. Remove any misshapen or damaged fruit. This ensures large, high-quality pears. Thin when 1 inch diameter or less.
Maturation & Harvest
8-10 weeksFruit grows to full size (3-4 inches), skin turns golden-yellow. Flesh becomes crisp and juicy. Ready to harvest late August through September.
Monitor for fruit ripeness by gentle pressure test. Maintain watering but reduce frequency 2-3 weeks before harvest. Support heavy branches with prop sticks. Watch for pest/disease pressure.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with neem oil or insecticidal soap in early morning. Encourage parasitic wasps. Remove affected leaves. Bacillus thuringiensis (Bt) is effective on young larvae.
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Use pheromone traps starting in spring. Apply spinosad or neem oil every 10-14 days during fruit season. Bagging individual fruits with fine mesh provides excellent protection. Remove dropped fruit promptly.
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Spray with strong water stream to dislodge. Use neem oil or insecticidal soap. Encourage natural predators like ladybugs and lacewings. Reflective mulches can help deter.
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Prune out heavily infested branches. Apply dormant oil spray in late winter. Use neem oil during growing season. Hand-remove if minor infestation.
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Hand-pick early morning and drop in soapy water. Use pheromone traps away from trees. Apply neem oil. Encourage parasitic wasps.
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Prune infected branches 12 inches below visible damage; sterilize tools between cuts with 10% bleach solution. Remove cankers. Avoid nitrogen-rich fertilizers. Plant resistant varieties nearby. Never use pruning sealer.
Uses
Fresh eating and desserts
CulinaryThe 20th Century pear is prized for eating fresh out-of-hand due to its crisp, juicy flesh and sweet, mild flavor. It can also be used in fruit salads, desserts, and light cooking applications where the fruit's delicate texture should be preserved. [source]
Asian cuisine ingredient
CulinaryNashi pears are traditionally used in Korean, Chinese, and Japanese cooking in both sweet and savory dishes, including marinades for meat and in traditional soups and stir-fries. [source]
Traditional digestive aid
MedicinalIn traditional Chinese and Japanese medicine, pears are believed to support lung health, soothe sore throats, aid digestion, and provide cooling properties. The fruit contains sorbitol which has mild laxative effects. [source]
Juice and beverage production
HouseholdNashi pears produce a clear, sweet juice that can be consumed fresh or processed. The juice is popular in Asian markets and used in beverages and drinks. [source]
Pollinator and wildlife support
WildlifeThe abundant spring flowers provide nectar and pollen for bees and other pollinators, supporting early-season forage when few other plants are blooming. The tree also provides shelter and nesting habitat. [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 in late August through September when fruit turns golden-yellow and yields slightly to gentle pressure. Unlike European pears, Nashi fruit ripens completely on the tree and should be harvested when ripe. Gently twist and lift fruit, or use pruning shears to avoid branch damage. Store at 32-40°F with 90-95% humidity for up to 8 weeks. Best eaten fresh within 1-2 weeks of harvest for optimal crispness and flavor.
Fun Facts
- 🌱 The 20th Century cultivar was developed in Japan in the 1880s and named to commemorate the arrival of the 20th century; it remains one of the most popular Asian pear varieties globally over 140 years later.
- 🌱 Unlike European pears (which are harvested hard and ripened off-tree), Nashi pears must ripen completely on the tree to develop their characteristic crisp texture and full sweetness—they will not ripen if picked early.
- 🌱 Nashi pears have significantly higher water content than European pears (approximately 89% water), giving them their distinctive crisp, juicy texture that some describe as similar to eating an apple crossed with a pear.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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