
Quick Growing Facts
Product Description
Tomato Black Opal Seeds
Tomato Black Opal Seeds produce delicious dark chocolate-coloured cherry tomatoes with outstanding flavour and impressive yields. In a good growing season, a single plant can produce well over 100 small cherry tomatoes, making this an excellent choice for gardeners looking for both unusual colour and heavy cropping.
Black Opal Tomato has good disease tolerance and late blight resistance, providing additional reliability throughout the growing season. The dark cherry fruits are packed with flavour and are perfect for salads, snacking, lunchboxes, and colourful summer dishes.
This is an indeterminate tomato variety, so plants require support and regular removal of side shoots. With good watering, feeding, and ventilation, Black Opal can provide a generous harvest throughout the summer.
Key Features
Produces distinctive dark chocolate-coloured cherry tomatoes.
Excellent flavour and attractive unusual colouring.
Can produce well over 100 fruits per plant in a good season.
Good disease tolerance.
Features late blight resistance.
Indeterminate growing habit.
Excellent for salads, snacking, and fresh eating.
How to Grow Tomato Black Opal Seeds
Sow Tomato Black Opal Seeds indoors on a warm kitchen windowsill or in a greenhouse.
Sow seeds approximately 0.5cm deep in pots and cover with a thin layer of compost.
Keep the compost well watered and warm. An ideal germination temperature is approximately 15–20°C.
Seedlings should begin to appear after approximately 7–15 days.
Once seedlings are large enough to handle, carefully transplant them into individual pots. Continue growing them in cooler conditions, but do not allow young plants to become cold, as this can stop their growth and make it difficult for them to recover.
Plant into the final growing position from April onwards. Plants can be grown in large pots, grow bags, or directly in greenhouse soil.
Tomato Growing Tips
Provide sturdy support as Black Opal is an indeterminate tomato.
Remove side shoots regularly as they develop.
Pinch out the main growing tip after approximately six trusses have formed.
Keep plants consistently and generously watered.
Begin regular tomato feeding after the first truss has formed.
Provide good ventilation, particularly when growing in a greenhouse.
Maintain steady growing conditions for the healthiest plants and best crops.
Frequently Asked Questions
What colour are Black Opal Tomatoes?
Black Opal produces distinctive dark chocolate-coloured cherry tomatoes.
How productive is Tomato Black Opal?
In a good growing season, plants can produce well over 100 cherry tomatoes each.
Is Black Opal resistant to late blight?
The variety has good disease tolerance and is described as having late blight resistance.
Is Black Opal determinate or indeterminate?
Black Opal is an indeterminate tomato, so plants require support and regular side-shoot removal.
Where can Black Opal Tomatoes be grown?
Plants can be grown in large pots, grow bags, or directly in greenhouse soil.
Perfect For
Greenhouses
Grow bags
Large containers
Cherry tomato lovers
Fresh snacking
Summer salads
Heavy cropping
Unusual tomato collections
Want more growing advice?
Read the full growing instructions, with practical advice and a few tips we’ve picked up from growing it ourselves.
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