Tomato Seeds – Cherry Black Opal (Indeterminate) | SUMMER / WINTER

Black Opal is an indeterminate cherry tomato developed from the well-known Black Cherry tomato and selected for improved growth habit, firmer texture and excellent flavour.

The vines continue growing, flowering and producing fruit throughout favorable conditions, so plants require reliable staking or trellis support.

The fruits are small, round and mature to a dark purplish-red / mahogany-black colour, creating a striking appearance in salads and fresh dishes.

Commercial references commonly describe maturity at around 70 days after transplanting.

Exact fruit size, colour intensity and maturity may vary according to temperature, sunlight and growing conditions.

Key Features

• Approx. 10 seeds per pack
• Indeterminate cherry tomato
• Vigorous vine growth
• Dark mahogany-purple fruits
• Deep reddish-black mature colour
• Small round cherry tomatoes
• Firm fruit texture
• Rich, sweet flavour
• Productive fruit clusters
• Extended harvesting period
• Suitable for trellis growing
• Excellent for kitchen gardens
• Suitable for raised beds
• Performs well in larger grow bags
• Attractive gourmet tomato variety

Culinary Uses

Black Opal tomatoes are especially suitable for:

• Fresh eating
• Salads
• Snacking
• Garnishing
• Tomato platters
• Sandwiches
• Roasting
• Grilling
• Pasta
• Pizza toppings
• Fresh salsa
• Gourmet dishes

Their distinctive dark colour makes them especially attractive for fresh presentation.

Recommended Grow Bags

G-12 Grow Bag – 12 × 12 inch 🔗
Suitable for one Black Opal plant with regular feeding, watering and strong support.

G-15 P Grow Bag – 15 × 14 inch 🔗
Provides additional root space for vigorous indeterminate growth.

G-24 Grow Bag – 24 × 12 inch 🔗
Suitable for approximately two plants with proper spacing and trellis support.

Indeterminate cherry tomatoes benefit from good root volume because plants continue growing and fruiting over an extended period.

Recommended Soil / Potting Mix

Use fertile, loose and well-drained soil rich in organic matter.

A practical GREEN GARDENS mix can be:

50% Bhalu Mitti (Sandy Soil) + 50% Vermicompost 🔗

Maintain reasonably consistent moisture while allowing excess water to drain freely.

Growing Instructions from Seeds

1. Sowing

Start seeds in nursery trays, seedling cells or small pots.

Sow approximately:

0.5 cm deep

Cover lightly with fine growing medium.

2. Germination

Keep the growing medium lightly moist.

Seeds generally germinate within:

6–10 days

under suitable warm conditions.

3. Sunlight

Provide bright light after germination.

Established plants generally require:

6–8 hours of direct sunlight daily

Strong sunlight supports healthy vine growth, flowering and development of the characteristic dark fruit colour.

4. Transplanting

Transplant seedlings when they are healthy, strong and approximately:

5–6 inches tall

or after developing several true leaves.

Water immediately after transplanting.

5. Plant Spacing

Maintain approximately:

45–60 cm between plants

Adequate spacing improves airflow and provides room for vine training.

6. Support

Black Opal is indeterminate and requires reliable support.

Provide:

• Stakes
• Tomato cages
• Vertical strings
• Trellis systems

Begin supporting vines early and tie stems loosely as they grow.

7. Watering & Feeding

Maintain consistent soil moisture, especially during flowering and fruit development.

Avoid repeated severe drying followed by heavy watering.

Before planting, incorporate GREEN GARDENS Vermicompost 🔗.

Once flowering begins, avoid excessive nitrogen and provide balanced nutrition with adequate potassium for fruit development.

8. Pruning & General Care

Indeterminate tomatoes can benefit from moderate vine management.

Remove only when necessary:

• Diseased leaves
• Damaged foliage
• Leaves touching the soil
• Excessively crowded lower growth
• Selected suckers where vine control is required

Avoid excessive pruning.

9. Flowering & Fruit Development

Tomatoes are largely self-pollinating.

Natural airflow or gently shaking flowering clusters can help pollen movement.

After fruit set, Black Opal tomatoes gradually change from green to their characteristic deep mahogany-purple / reddish-black colour.

Good sunlight helps improve mature fruit colour.

10. Harvesting

Commercial references generally indicate maturity at approximately:

70 days after transplanting

under suitable conditions.

Harvest when fruits develop their mature dark colour and remain firm but ripe.

Because Black Opal is indeterminate, harvesting can continue over an extended period while favourable conditions persist.

Related Products

G-12 Grow Bag – 12 × 12 inch 🔗

G-24 Grow Bag – 24 × 12 inch 🔗

GREEN GARDENS Grow Bags 🔗

GREEN GARDENS Vermicompost 🔗