Thompson & Morgan Tomato Garnet - Seed Packet

This versatile cherry tomato variety produces long uniform trusses of very-sweet fruits with an ex...

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This guide is for home gardeners looking to grow a sweet and versatile cherry tomato. The Thompson & Morgan Tomato Garnet variety offers uniform trusses of very-sweet fruits, each weighing up to 15g, perfect for various dishes. A potential caveat is its specific temperature and light requirements for optimal growth.

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Model Part Number75031
BrandThompson & Morgan

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FAQs

What is the ideal position for growing Tomato Garnet?

Tomato Garnet thrives in a position of full sun and requires fertile, reliably moist, well-drained soil or compost.

How tall do Thompson & Morgan Tomato Garnet plants grow?

These plants can reach a height of up to 200cm (approx. 6.5 feet) and a spread of up to 50cm (approx. 1.6 feet).

When should I sow the seeds for outdoor cultivation?

For outdoor cultivation, sow seeds from March to April. For greenhouse cultivation, sow from February to March.

How much space do the plants need when planted outdoors?

When planting outdoors, space the tomato plants 60cm (24 inches) apart.

What is the average weight of each tomato?

Each fruit produced can weigh up to 15g.

Can I grow these tomatoes in containers?

Yes, you can grow Tomato Garnet in containers, such as 25cm (10") pots, or in growbags (allowing 3 plants per bag).

What temperature is needed for germination?

Seeds require a constant temperature of around 15-20°C (59-68°F) until germination.

Troubleshooting

Seeds not germinating

Ensure consistent temperature (15-20°C) and adequate moisture in the seed compost. Check that seeds are not sown too deeply.

Seedlings are leggy and weak

Provide more light and ensure they are not overcrowded. Maintain the minimum growing temperature of 15°C.

Plants not flowering or fruiting

Confirm the plant is receiving full sun and adequate nutrients. Check for consistent watering and appropriate temperature.

Blossom end rot on fruit

This is often due to inconsistent watering. Ensure the soil remains evenly moist and consider calcium supplements if necessary.

Yellowing leaves

Could indicate a nutrient deficiency or over/under-watering. Adjust watering schedule and consider feeding with a balanced liquid fertilizer.

Pros and Cons

Pros

  • Produces very sweet tomatoes with a good flavor profile.
  • Fruits are a useful size for cooking and garnishing.
  • Suitable for growing in both protected (greenhouse) and open ground environments.
  • Consistent truss development aids in presentation and harvesting.
  • Can be grown from February through to April depending on cultivation method.

Cons

  • Requires specific temperature ranges for germination and growth (15-20C).
  • Needs a well-drained, fertile soil or compost for best results.
  • Can grow quite tall (up to 200cm), requiring support or space.
  • Seed starting requires a propagator or warm environment initially.
  • Outdoor planting needs to wait until all risk of frost has passed.

Setup, Compatibility & Care

Sowing Seeds:

  1. Sow seeds on the surface of a good, free-draining, damp seed sowing mix.
  2. Cover lightly with compost or vermiculite.
  3. Place in a propagator at 15-20°C (59-68°F) until germination (7-14 days).

Transplanting Seedlings:

  1. Once seedlings have 2 true leaves, transplant into individual 7.5cm (3") pots.
  2. Grow on at a minimum temperature of 15°C (59°F).

Greenhouse Cultivation:

  • Transplant plants in late May or when flowers appear.
  • Allow 3 plants per growbag, one per 25cm (10") pot, or plant directly into greenhouse soil.

Outdoor Cultivation:

  • Wait until all risk of frost has passed.
  • Gradually acclimatize plants to outdoor conditions over 7-10 days.
  • Plant out from early June when plants are approximately 20cm (8") tall.
  • Choose a sheltered position in full sun on fertile, reliably moist, well-drained soil.
  • Space plants 60cm (24") apart.

Care:

  • Provide support such as stakes or cages as the plants grow tall (up to 200cm).
  • Water consistently, especially during dry periods.
  • Feed regularly with a suitable tomato fertilizer.

Compatibility:

  • This variety is compatible with standard tomato growing methods, including containers, growbags, and open ground.