Susie Orange Black Eye Vine, Thunbergia Seeds

Mixed Black-Eyed Susan Vine Seed

Vigorous orange-flowered vine covers vertical supports quickly
Dark centers make each bright bloom visibly pop
Train onto trellises, fences, obelisks, or container towers
Abundant flowers continue through warm summer conditions

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Key Attributes

Botanical Name

Thunbergia alata

Days to maturity

90 Days

Sun

Full Sun

Packet

25 Seeds

Zones 10–11 Check your growing zone

About Mixed, Black-Eyed Susan Vine Seed, Black-Eyed Susan Vine Seed

The Susie Orange Black Eye Vine Thunbergia is a stunning bright orange Black-Eyed Susan variety that grows very vigorously. This variety produces an abundance of beautiful large flowers. The Susie Orange Black Eye Vine quickly covers a trellis against a sunny fence, or look spectacular growing up an obelisk in a container.

Growing details

Planting

Sow Depth

1/8"

Days to Germination

10–21 days

Germination Type

B - Warm-Water Soak

In-row plant spacing

12-18"

Plant profile

Life Cycle

Tender Perennial

Hardiness Zone

Zones 10-11

Plant Height

72 inches

Growth Habits

Climbing, Vining

Seed & variety

Seeds Per Ounce

1,075

Color

Orange

Seed Type

Open Pollinated

Before Planting

Black-eyed Susan vine requires warmth, support, and rich but freely draining soil. Soak seed overnight, prepare individual cells to reduce root disturbance, and install a trellis before plants begin rapid growth.

Planting

Start black-eyed Susan vine indoors 4–10 weeks before the last spring frost, or direct sow after frost where the season is long. Keep the medium warm and evenly moist until emergence, then provide strong light and airflow. Harden seedlings gradually before transplanting into warm soil. Space plants 12–18 inches apart beside a trellis.

Watering

Keep the root zone evenly moist while vines are growing and flowering, especially in containers. Water when the top inch dries, but empty saucers and avoid constant saturation.

Fertilizer

Mix compost into the site and feed container vines every two to three weeks with a dilute balanced fertilizer. Reduce nitrogen if leaves flourish while flowers remain sparse.

Harvesting

Black-eyed Susan vine is not a durable cut flower; enjoy blooms on the vine and deadhead to prolong flowering. For seed, allow selected pods to turn dry and brown, then collect them before they split. Wear gloves if sap irritates your skin.

Tips

Guide young stems onto their support rather than allowing a tangled mat. Pinch once for branching, deadhead where seedling volunteers are unwanted, and overwinter prized plants indoors before frost.

Pests & Diseases

Root rot is the main concern when Black-Eyed Susan vine stays wet; Botrytis, powdery mildew, and leaf spots may follow humid, crowded growth. Brown roots or wilt despite moist soil point to rot. Improve drainage immediately, thin tangled vines, and discard plants with extensive crown decay.

Whiteflies rise from black-eyed Susan vine foliage when disturbed, spider mites web leaves in heat, and aphids cluster on shoot tips. Inspect trellised growth from the bottom upward, rinse pests from leaves, and remove heavily infested shoots. Treat both leaf surfaces if intervention becomes necessary.