Kurume Long Eggplant is a vigorous Japanese heirloom that brings elegance and gentle flavor to warm-season gardens. Its glossy black fruits stretch to 9-10 inches long with distinctive purple calyxes, maturing in just 60-69 days after transplanting. This open-pollinated variety thrives in full sun across hardiness zones 2-13, reaching a compact 30-36 inches tall, making it equally at home in sprawling market gardens and modest home beds.
Photo © True Leaf Market
Growing Conditions
USDA Zone
2-13
Sunlight
Full Sun
Water
Moderate
Soil
Well-drained, Fertile Loam; Rich Organic Matter
Preferred Temp75-85°F
Growth Stats
36 in
Height
—
Width
18 in
Spacing
60–69
Days to Harvest
PeriodPerennial
TypeSubshrub, Forb/herb
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
2-13
Size
36in H x ?in W
Growth
Perennial
Care
High
Hover over chart points for details
Highlights
This Japanese variety stands out for its exceptional fruit quality and mild, delicate flavor, a welcome departure from the sometimes-assertive character of other eggplants. The fruits are strikingly slender and elongated, with that characteristic shiny black skin and purple calyx that commands attention on the plate. What truly sets Kurume Long apart is its vigor and adaptability; it's equally reliable in open field conditions and home gardens, and it matures quickly enough to reward even gardeners in shorter seasons.
Common Uses
Kurume Long Eggplant's mild, delicate flavor and tender flesh make it exceptional for Japanese preparations, grilled whole, sliced and sautéed, or incorporated into miso-based dishes where its subtle character shines. The slender form cooks evenly and quickly, making it ideal for stir-fries, tempura, and any preparation where you want the eggplant to complement rather than dominate. Its elegance also makes it a natural choice for presenting whole or halved on the plate.
Growing Timeline
First Bloom
Early Summer
First Harvest
Mid-summer
Last Harvest
Early Fall
Care Instructions
Start Indoors
Start seeds indoors 6-8 weeks before your last frost date. Eggplant seeds germinate best in warm conditions (70-80°F). Keep the soil consistently moist until seedlings emerge, then provide bright light and maintain warmth throughout the indoor growing phase.
Transplant Outdoors
Harden off transplants over 7-10 days before moving them to the garden. Transplant outdoors only after soil temperatures have warmed to at least 60°F and nighttime lows stay consistently in the mid-60s or warmer. Space plants 18 inches apart in rows 24 inches apart. Kurume Long's upright growth habit means it won't sprawl excessively, so these spacings support good air circulation without crowding.
Harvesting
Fruits reach harvestable size at 9-10 inches long and should be picked when the skin is glossy and deep black with the purple calyx still vibrant. Harvest fruits regularly to encourage continued production throughout the season. Use a sharp knife or pruners to cut the fruit from the stem rather than twisting, which can damage the plant.
Pruning
No pruning is typically necessary for this upright, bush-type variety. Its natural growth habit remains compact and well-structured without intervention.
Growing Calendar
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Companion Planting
Ecology & Traits
Edible
Scientific Classification
Solanum melongena L.
Family
Solanaceae
Genus
Solanum
Duration
Perennial
Growth Habit
Bush
Native Status
L48 (I)PR (I)
History & Origin
“Kurume Long Eggplant originates from Japan, where it represents generations of careful selection for fruit quality and garden reliability. The variety's name references the Kurume region, and its development reflects the Japanese horticultural tradition of breeding for both aesthetic excellence and culinary delicacy. This open-pollinated heirloom has traveled from Japanese farms to global seed catalogs, preserving its original character without genetic modification.”