Asian pears (Pyrus pyrifolia) are crisp, round and juicy, closer to an apple in texture than to a soft European pear. They are a good choice for home orchards, but they have a few needs that catch people out: they almost always need a second variety for pollination, and they tend to set far more fruit than the tree can carry.

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The short answer: plant at least two Asian pear cultivars that bloom at the same time and can pollinate each other, 10 to 15 feet apart, in full sun and well-drained soil with a pH of about 5.9 to 6.5. Clemson Extension recommends a split annual fertilizer application, dormant-season pruning of older spurs, and heavy hand-thinning so fruit end up about 6 inches apart. Let the fruit ripen on the tree.

How Asian pears differ from European pears

Clemson Extension explains the key differences. Asian pears reach their best quality when allowed to ripen on the tree, like apples and peaches, while European pears are usually picked green and ripened at room temperature. Ripe Asian pears are yellow to yellow-green, depending on the cultivar, and crisp and juicy with some tartness near the core. Japanese cultivars tend to be rounder; Chinese cultivars are more oval or pear-shaped.

Step 1: Choose two compatible cultivars

This is the most important decision. Clemson Extension says all Asian pear cultivars should be considered self-incompatible, so another Asian pear cultivar must be planted nearby for cross-pollination. Some cultivars are cross-incompatible and will not pollinate each other, so check that your pair is compatible and that their bloom times overlap. Chinese cultivars generally bloom a week or more before Japanese cultivars and are best paired with another Chinese cultivar.

Disease resistance is worth weighing too. Clemson Extension reports that, in South Carolina evaluations, Shinko showed the best fire blight resistance, followed by Shin Li, Olympic and Seuri, while Twentieth Century and Hosui are highly susceptible. Hosui is still widely planted as a high-quality early pear and a pollinator for Shinko.

Check chill hours as well. Clemson Extension says Asian pears are thought to need roughly 600 to 900 chilling hours to break dormancy, though some cultivars may do well with less.

Step 2: Pick the right site

Sun. NC State Extension says Asian pears prefer full sun and well-drained, fertile soil.
Frost. NC State Extension advises planting where late spring frosts will have the least effect. Avoid low spots where cold air settles.
Soil pH. Clemson Extension says pears do best at a soil pH of 5.9 to 6.5, and that testing the soil before planting is vital.
Space. Both Clemson and NC State recommend planting trees 10 to 15 feet apart. NC State notes that Asian pears can grow larger than 20 feet depending on the rootstock and can live at least 50 years.

Step 3: Plant in fall or early spring

Clemson Extension recommends planting in fall or early spring. After planting, water is the most important part of aftercare. The Morton Arboretum says a newly planted tree has not yet extended its roots into the surrounding soil, so moisture must reach the root ball. On most well-drained soils it recommends about 1 inch of water per week through summer and fall, and up to 2 inches a week on sandy soil.

The Arboretum also recommends a 3- to 4-inch layer of organic mulch such as wood chips, extending out past the ends of the branches, kept away from the trunk.

Step 4: Train the tree for strength

Clemson Extension says Asian pears can be trained to a central leader like European pears and apples. It adds that developing several secondary and tertiary scaffold branches helps prevent the loss of the whole tree if fire blight strikes, because infected limbs can be removed without losing the main structure.

Step 5: Fertilize carefully

Clemson Extension recommends fertilizing pear trees every year in a split application: half a cup to a third of a cup of 10-10-10 per year of tree age, up to a maximum of 8 cups per tree. Apply half before growth begins and half after fruit set, spread under the canopy out to the drip line. If fruit set is poor, skip the second half.

It warns that too much nitrogen encourages soft shoot growth that is more susceptible to fire blight. Heavily pruned trees may not need fertilizer for a year or two, and bearing trees should average 12 to 18 inches of shoot growth a year. The Morton Arboretum’s general advice is the same in spirit: fertilizer only fixes nutrient deficiencies, so test before you feed.

Step 6: Prune in late winter

According to Clemson Extension, young trees bear fruit near the tips of one-year-old shoots. As the tree matures, most fruit forms on spurs, short shoots with clusters of fruit buds that stay productive for about 10 years. Clemson recommends pruning in late winter while the tree is dormant and removing about 10 percent of the older spurs each year to keep fruit size up.

Step 7: Thin the fruit hard

Clemson Extension calls heavy fruit thinning essential. Asian pears tend to set too much fruit, which leads to small pears and broken limbs. Its guidance:

Thinning step	Clemson Extension guidance
When	14 to 40 days after petal fall, or within 6 to 8 weeks after flowering when fruit are dime-sized
How many times	Commercial growers often thin twice; home growers can thin once
How much	One fruitlet on every other spur cluster, or about 6 inches between fruits

Step 8: Watch for fire blight and rust

Fire blight is the main disease threat. Clemson Extension recommends pruning out infected branches about 18 inches below the visible damage during the dormant season, cleaning tools between cuts with one part bleach to nine parts water, and disposing of the prunings. See how to treat fire blight on pear trees and how to treat rust on pear trees for more detail.

Step 9: Harvest when ripe on the tree

Unlike European pears, Asian pears should be picked ripe. Clemson Extension says they reach optimum quality on the tree, when they turn yellow to yellow-green depending on the cultivar. Taste one before picking the rest.

For pear planting basics that apply to Asian pears too, see how to plant an Asian pear tree.

Key takeaways

Plant two compatible Asian pear cultivars with overlapping bloom.
Give them full sun, well-drained soil at pH 5.9 to 6.5, and 10 to 15 feet of space.
Feed with a split annual application and avoid excess nitrogen.
Prune in late winter and remove about 10 percent of older spurs yearly.
Thin fruit to about 6 inches apart, and let pears ripen on the tree.

Sources

Asian Pear, Clemson Cooperative Extension Home & Garden Information Center
Pyrus pyrifolia (Asian Pear), NC State Extension Gardener Plant Toolbox
Caring for New Transplants, The Morton Arboretum
How and When to Use Fertilizer on Plants, The Morton Arboretum

Top photo: PumpkinSky, CC BY-SA 4.0, via Wikimedia Commons

Growing Asian Pears: Pollination, Pruning and Thinning for Good Fruit