Cold hardiness

Future

2050

2100

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.

Now

Zone 6b

USDA

Published baseline for this location from 1991-2020.

Source: USDA Plant Hardiness Zone Map 2023 (1991-2020 climatology) via ArcGIS FeatureServer

Won't grow here

2050

Zone 7a

Plotwright

Projected zone for this same location in 2050 (2041-2070) using SSP3-7.0 (regional rivalry).

Won't grow here

In plain terms: This location is in Zone 6b today. Its hardiness profile is cold winters, and coldest nights are typically around -3°F. By 2050, the projected hardiness zone is Zone 7a based on SSP3-7.0 (regional rivalry). That is a +0.5-zone shift from Zone 6b to Zone 7a by 2050.

✕

Out of range today and still out of range in 2050.

Heat tolerance

Future

2050

2100

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.

Loading AHS heat-zone data for this location...

Where this plant fits

Suitable across 32 ecoregions — 22 climate-resilient through 2070 · 10 newly possible by 2070. Best matches first.

Arizona Mountains forests

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Atlantic coastal pine barrens

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California coastal sage and chaparral

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Central Pacific Northwest coastal forests

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Central-Southern Cascades Forests

Eastern Australian temperate forests

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Eastern Great Lakes lowland forests

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Edwards Plateau savanna

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What it needs

Conditions

Light

Full sun

Water

Moderate water

Spacing

21"

Habit

Upright tender herbaceous perennial grown as a warm-season annual vegetable

Care tips

•

Do not rush it outdoors — wait until frost danger is past and nights hold at or above 65F, or growth stalls.

•

Give it full sun and steady, medium moisture; drought stress and cold both reduce fruit set.

•

Harvest while the skin is still glossy and well-colored; over-mature fruit turns dull and bitter.

Lifecycle

Planting

Eggplants require warm conditions and a lengthy growing season. Start seeds indoors 8-10 weeks before transplanting outdoors, after all danger of frost has passed and nighttime temperatures are consistently at or above 65F. Plant in full sun in fertile, well-drained soil, spacing plants 18-24 inches apart (Missouri Botanical Garden PlantFinder).

Transplanting

Move hardened-off starts out only after frost danger passes and soil has warmed; protect young transplants from sudden cold or wind, since eggplant is highly cold-sensitive.

Early growth

Mulch between plants and maintain consistent, medium moisture without allowing drought stress (Missouri Botanical Garden PlantFinder). NC State Extension notes a preferred soil pH of about 5.5 to 6.8.

Maturity

Plants reach 2-4 feet tall and 1-3 feet wide. Pinch terminal growth to regulate fruit production, and harvest when fruits develop full color but still retain a glossy appearance (Missouri Botanical Garden PlantFinder).

Propagation

Grown from seed started indoors ahead of the season; saving seed depends on cultivar and cross-pollination, so verify variety before saving.

Pollination

Self-fertile

Eggplant flowers are perfect (self-fertile) and largely self-pollinating, but fruit set improves markedly with buzz pollination. NC State Extension notes the flowers attract bumblebees, whose vibration shakes loose pollen the plant cannot easily release on its own; in still or bee-poor conditions, gardeners sometimes hand-vibrate flowers to improve set.

Plants don't grow alone

Pollen forage

Bee

Common eastern bumblebee (Bombus impatiens)

NC State Extension documents that eggplant flowers attract bumblebees. Eggplant pollen is released by buzz (sonication) pollination, which bumblebees perform and honey bees largely cannot, so bumblebees meaningfully improve fruit set.

For people

Parts edible

Only the fruit is eaten — the immature-but-colored, glossy berry is harvested and cooked (fried, grilled, roasted, steamed, or stewed). The leaves, flowers, stems, and roots are toxic and should not be consumed, a hallmark of the nightshade family (NC State Extension).

Edible parts

fruit

Toxic parts

leaves, flowers, stems, roots

Native range

AHS heat range

6-12

Climate notes

•

Missouri Botanical Garden PlantFinder classifies Solanum melongena as a herbaceous perennial hardy in USDA zones 9 to 12, grown in full sun with medium water; it is typically cultivated as a warm-season annual vegetable in the U.S. because it is cold-sensitive and needs a long, warm, frost-free season.

•

NC State Extension lists USDA hardiness zones 9a-12b, full sun (6+ hours), and moist, well-drained soil at pH 5.5-6.8, with fruit measuring roughly 4 to 8 inches long depending on cultivar.

•

Missouri Botanical Garden PlantFinder notes susceptibility to verticillium wilt and to flea beetles, hornworms, Colorado potato beetles, and cutworms; rotating away from Solanaceae and choosing resistant cultivars reduces pressure.

In the designer

Growth over time

11-22" tall · 5-16" spread

Transplant 8-10 weeks after an indoor start; establishes once nights hold at or above 65F.

Design roles: Edible · Container · Focal point

Eggplant

At a glance

Why it matters

Cold hardiness

Heat tolerance

Where this plant fits

What it needs

Lifecycle

Pollination

Plants don't grow alone

For people

Native range

Climate notes

In the designer

Sources & citations