Medlar Trees

The medlar (Mespilus germanica) is among the oldest cultivated fruits in the Western world — referenced in Greek poetry as early as the 7th century BC, grown in medieval palace gardens and monastery orchards, mentioned by Shakespeare, and beloved through the 18th century before largely disappearing from commercial trade (University of Missouri Extension; Herb Society of America). Today it is nearly impossible to buy at retail, which is precisely what makes growing one so rewarding.

For the gardener, medlar offers an extraordinary combination of qualities rarely found in a single plant: genuine ornamental value across all four seasons, self-fertility, minimal pest and disease pressure, low pruning demands, and a distinctly unusual fruit that rewards the patient grower with a flavor — spiced, sweet, and complex — that has no close comparison on a grocery store shelf. The Missouri Extension's University of Missouri describes the bletted fruit as having "complex, sweet, date and citrusy-like flavor with a slightly grainy texture." MDPI research characterizes the flavor as reminiscent of pear and apple, with the rich spiced quality that Raintree's own description calls cinnamon-applesauce.

Ornamentally, medlar earns its place in three seasons: the late-spring flowers — large, white, five-petaled, similar to pear blossom — are striking. The dark green, lance-shaped leaves turn vivid yellow-orange and red in fall. And after leaf drop, the russet-brown fruits persist on the gnarled, contorted branches, giving the tree a distinctive winter silhouette that no other fruiting tree can match.

It is also genuinely low-maintenance. Once established, medlar does not demand annual fertilization, complex pruning regimens, or close attention to disease. For growers who want an unusual, productive, and beautiful tree without the intensive management of apple or pear, medlar is an exceptional choice.

The medlar fruit is botanically a pome — a relative of apple, pear, and quince — but looks unlike any of them. Roughly round, brownish-green at harvest, it has a distinctively open, five-pointed calyx (the flower end) that gives it a characteristic and somewhat notorious appearance that accounts for its colorful historic nicknames. Fruits of standard varieties typically measure 1–1.5 inches in diameter; large-fruited cultivars like Macrocarpa can reach 2–2.5 inches.

When picked in late autumn, medlar fruit is rock-hard and completely inedible raw — astringent, acidic, and starchy. It becomes edible only through bletting: a natural post-harvest ripening process in which starches convert to sugars, tannins decrease, and the firm white flesh transforms into a soft, brown, spoonable paste. During bletting, the activity of polyphenol oxidase drives fruit darkening, and the sugar content rises significantly while organic acids decrease, per MDPI food science research (MDPI Foods, 2023). Bletting is not rotting — it is a controlled, natural ripening analogous to the process persimmons undergo on the tree after frost.

All medlar varieties are self-fertile — only one tree is needed for a full crop. Variety differences center primarily on fruit size, flavor intensity, tree habit, and productivity. All varieties carry the same unique bletting requirement. Raintree carries the following selections:

Sun and exposure

Medlar produces best in full sun — a minimum of 6 hours of direct sunlight per day, with 8+ hours preferred for maximum fruit production and quality (Polyculture Project). The tree is tolerant of partial shade (4–6 hours of direct light), where it will still produce fruit, but yields will be lower and fruit flavor less intense than in full sun. In the PNW, a south- or southwest-facing exposure that maximizes heat accumulation is strongly preferred — reflected warmth from a wall or fence can make a meaningful difference in ripening and blet quality in cool-summer years.

Medlar blooms late — May in most temperate US locations — which means its flowers largely escape the late frost events that damage earlier-blooming fruit trees. This makes medlar a practical choice for frost-pocket sites that regularly damage apples and pears, provided drainage is adequate. Avoid locations where cold air pools in still, clear nights if other site factors allow it.

Soil

Medlar is adaptable to a wide range of soils but performs best in well-drained, slightly acidic loam with a pH of approximately 6.0–7.0. The Polyculture Project describes the ideal as "a well-drained slightly acid (pH 6.5) loam soil" while noting that medlar "is easily pleased and will tolerate a wide range of soils except for very alkaline or chalky soils." Burpee's growing notes similarly place preferred pH at 6.5–7.5. The non-negotiable requirement is free drainage — medlar roots do not tolerate waterlogging, which can lead to root and crown rot regardless of soil type (Edible Landscaping).

Test your soil pH before planting and amend if needed. In heavy clay soils, consider raised planting mounds to improve drainage. Work 1–2 inches of plant-based organic matter (compost or aged wood chips) into the planting area, 1.5–2 times the diameter of the planting hole and up to one foot deep.

Plant bareroot medlar in late winter to early spring while dormant, before bud break. Container-grown trees plant successfully spring through early fall in the PNW, though spring establishment is preferred. Dig a hole twice as wide as the root ball; backfill with native soil amended with compost. Set the graft union 1–2 inches above final soil level — do not bury it, which can cause the scion to root on its own and gradually negate the dwarfing effect of the rootstock. Water thoroughly after planting and apply a 2–4 inch mulch layer, keeping it pulled back 4–6 inches from the trunk to deter voles and prevent crown rot.

Stake young trees for the first 2–3 years — medlar's somewhat top-heavy branching structure benefits from support during establishment. Remove the stake once the trunk has thickened enough to stand without it. Do not apply fertilizer directly in the planting hole; wait until the second year to begin any supplemental feeding.

Medlar requires a period of winter cold to break dormancy and flower reliably — like apple and pear, it is a temperate pome fruit adapted to climates with genuine winters. Raintree's description cites 200–400 chill hours for most varieties. Some sources place the comfortable range at 300–500 hours. Academic literature frequently notes that the chill requirement is "similar to apples" but does not consistently give precise figures for medlar specifically. The Temperate Climate Permaculture database notes chill requirement as "not described" for the species.

In practical terms: growers in most of the Pacific Northwest, Northeast, and upper Midwest will have more than adequate chill hours for medlar without concern. Growers in mild-winter locations where temperatures rarely drop below 40°F — parts of coastal California, the Gulf Coast, and Florida — should consult their local cooperative extension office about typical accumulated chill hours before selecting a variety. Medlar is not recommended for Zone 10 and warmer (Burpee).

Medlar is among the least demanding fruit trees to prune — its naturally attractive, spreading, somewhat gnarled branch structure is part of its appeal and does not require the rigid frameworks demanded of apple or pear. The most important pruning work happens in the first 2–3 years to establish a sound open framework; after that, annual maintenance is light.

Timing

Prune during dormancy in late winter — late February through March in most PNW locations, before bud break. Pruning in dry, frost-free weather reduces the risk of fungal disease entering cuts. Medlar does not bleed sap heavily when cut, so timing is more flexible than with kiwi or cherry, but dormant pruning is still preferred (Keepers Nursery; GardenFocused).

Once established (2–3 years after planting), medlar is relatively drought-tolerant and requires supplemental irrigation only during prolonged dry periods. Young trees, however, require consistent deep watering in their first few growing seasons — particularly during the first summer — to establish a healthy root system. Target approximately 1 inch of water per week over the root zone during the growing season, applied deeply once or twice per week rather than lightly each day. Allow the top 1–2 inches of soil to dry between waterings; the soil should remain moist to about 12 inches deep (Edible Landscaping).

In the PNW, spring rainfall typically covers irrigation needs through June. Supplemental water becomes important July through September in dry summers, especially in the fruit-sizing and ripening window.

Medlar is not a heavy feeder. A balanced all-purpose fertilizer applied in early spring before growth begins, or 2–3 inches of well-rotted compost over the root zone, is generally sufficient for established trees. If the tree is producing healthy new growth annually and maintaining deep green foliage, additional fertilization is likely unnecessary. Avoid late-season nitrogen, which encourages soft growth susceptible to winter damage.

Medlar fruit ripens in late October to November in most temperate US climates; ripening time at Raintree's location (north of Mount St. Helens, WA) is mid to late October. Traditional guidance recommends harvesting after the first hard frost, which initiates cell wall breakdown and speeds bletting. However, the more important harvest trigger is fruit maturity — the fruit should be fully grown (approximately 180 days after pollination), the skin should show the first signs of color change from green, and the fruit should separate easily from the spur with a gentle twist (The Orchard Project; Keepers Nursery).

Harvest on a dry day when the fruit is still firm. The fruit is too fragile when soft to harvest in quantity without damage. Lay harvested fruit calyx-side down in single layers in ventilated trays in a cool location and begin the bletting process (see bletting section above). Do not store medlar fruit touching other fruit; check and remove any that show signs of mold before it spreads to neighbors.

A mature medlar tree in good health can yield 20 pounds or more of fruit annually (One Green World). Fruit left on the tree through a hard freeze may blet on the tree — this is acceptable and produces edible fruit, but on-tree bletted fruit is vulnerable to birds, is difficult to harvest cleanly, and risks dropping before you collect it.

Medlar can be successfully grown in large containers, particularly when grafted on dwarfing quince rootstock. Use a minimum 25–30 gallon container with excellent drainage. Fill with a quality potting mix amended with compost; do not use garden soil in pots. Increase container size gradually over the first several years rather than starting in a very large pot.

Container medlar requires more frequent watering than in-ground trees and occasional feeding with a slow-release balanced fertilizer in spring and early summer. In Zone 6 and colder, container roots have no insulation from surrounding soil — move pots to an unheated but frost-protected structure in winter to prevent root freeze. A south- or west-facing wall provides the reflected warmth that improves ripening in PNW container culture.