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Thompson & Morgan Tomato Oh Happy Day - 1 Seed Packet (8 Seeds)

Not AvailableThompson & Morgan Tomato Oh Happy Day - 1 Seed Packet (8 Seeds)
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A real bonus for gardeners, Tomato ‘Oh Happy Day’ is. ‘Oh Happy Day’ F1 has superb blight resistan...

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For gardeners seeking a reliable and flavorful tomato variety, the Thompson & Morgan Tomato ‘Oh Happy Day’ F1 Hybrid offers superb blight resistance and a generous harvest from mid-summer to autumn. While it thrives in sunny conditions and containers, consistent watering is essential for optimal fruit development. This cordon tomato variety produces round, slightly flattened 150g fruits with a balanced sweet and acidic taste, making it ideal for both greenhouse and patio cultivation.

All features

Model Part Number84328
BrandThompson & Morgan

Extended Product Information

FAQs

What is the main benefit of the 'Oh Happy Day' F1 tomato?

The main benefit is its superb blight resistance, which helps protect the plant from disease and ensures a more reliable harvest.

When should I sow the seeds for greenhouse cultivation?

For greenhouse cultivation, sow seeds from February to March.

When should I sow the seeds for outdoor cultivation?

For outdoor cultivation, sow seeds from March to April.

What is the typical size of the tomatoes produced?

The tomatoes are round, slightly flatter, and weigh approximately 150g each.

Can I grow this tomato in a pot?

Yes, this cordon variety is perfect for planters on the patio or in the greenhouse.

How long does it take for the seeds to germinate?

Germination typically takes 7-14 days when kept at a constant temperature of 15-20°C.

What kind of support does this tomato plant need?

As a cordon variety, it requires staking or support to grow upright to its full height of up to 200cm.

What is the harvest period for this tomato variety?

You can expect to harvest fruits from July through to October.

Troubleshooting

Seeds not germinating

Ensure seeds are kept consistently moist and at the correct temperature (15-20°C). Check the viability of the seed packet. Do not let the soil dry out.

Seedlings are leggy and weak

Provide more light and ensure they are not kept too warm after germination. Transplant into individual pots once they have two true leaves.

Plants wilting

Check soil moisture. Inconsistent watering can cause wilting. Ensure adequate watering, especially in hot weather. Check for signs of root rot if overwatered.

Yellowing leaves

This can indicate a nutrient deficiency (especially nitrogen or magnesium) or overwatering. Ensure a balanced fertilizer is used and watering is appropriate.

Poor fruit set

Ensure adequate pollination (natural airflow, or hand pollination if in a very sheltered greenhouse) and sufficient sunlight. Consistent watering is also key.

Pros and Cons

Pros

  • Excellent disease resistance (blight)
  • Long harvest period
  • Good taste with balanced acidity and sweetness
  • Suitable for container gardening
  • High yield potential
  • Vigorous growth

Cons

  • Requires full sun for best results
  • Cordon variety needs support
  • Sowing times are specific for greenhouse vs. outdoor
  • Requires consistent watering
  • Germination can take 7-14 days
  • Success depends on good seed-starting conditions

Setup, Compatibility & Care

Seed Starting:

  • Greenhouse Sowing: Sow seeds from February to March.
  • Outdoor Sowing: Sow seeds from March to April.
  • Medium: Use a good, free-draining seed sowing mix. Sow seeds on the surface and cover lightly with compost or vermiculite.
  • Temperature: Maintain a consistent temperature of 15-20°C (59-68°F) in a propagator until germination.
  • Germination Time: Expect germination within 7-14 days.

Transplanting & Growing On:

  1. Once seedlings develop two true leaves, transplant them into individual 7.5cm (3") pots.
  2. Grow on at a minimum temperature of 15°C (59°F).
  3. Position: Plant in a location that receives Full Sun.
  4. Support: As a cordon variety, the plant will need staking or other support to grow upright.
  5. Watering: Water consistently, especially during dry periods, to ensure good fruit development.

Care:

  • Ensure adequate spacing (up to 50cm spread when established).
  • Provide adequate nutrients through feeding if growing in containers.

Compatibility:

  • This variety is compatible with greenhouse cultivation, patio planters, and sunny garden beds.
  • Requires soil or a large pot with good drainage.