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Tomato 'Diplom' F1 (Organic) Seeds

Unwins (Organic)


Catalogue Code: 30610093

Sale price

In stock

Regular price £3.99
Organic Diplom F1 Tomato Seeds: early-maturing, uniform & round, heavy-cropping, fine-flavoured, vitamin-rich, easy to grow & resistant to disease.

Key Features

  • F1 Hybrid variety
  • Prefers full sun

Pack Contents: 8 Seeds

Height: 180cm


Unwins Organic Tomato Diplom F1 Seeds is an early-maturing variety of uniform round tomatoes.

Diplom is a great heavy cropping variety. This fine-flavoured tomato is vitamin rich and also easy to grow. This variety also has good disease resistance.
  • Perfect for pots and containers
  • F1 Hybrid variety

Sowing Indoors
Level fill a module tray with seed compost firming with the base of another tray. Water well with a fine rose. Sow seeds individually and lightly cover with vermiculite. Place in a propagator at 18-20°C or cover tray with cling film and leave in a warm room. Keep moist.

Growing On
When shoots appear, remove cling film. Keep seedlings in a light position, but shade from direct sunlight. When plants have 4 leaves transplant to 8cm pots of potting compost. Grow coolly and steadily at a minimum temperature of 15°C.

Planting Out
Gradually accustom plants to outdoor conditions for 2-3 weeks before planting out when temperatures exceed 10°C. Transfer to large pots (minimum 30cm), grow bags, or in a border 45cm apart either in a greenhouse or in a sunny, sheltered spot outside.

Cordon / Indeterminate/ Vine varieties require training up canes, strings or wires. Remove side shoots as they appear.

Tomatoes are thirsty and hungry plants. Feed and water regularly and remember to ventilate your greenhouse on warm days. Pinch out the growing tip once it reaches the top of the support, allowing a maximum of 6 fruiting trusses.

Growing Calendar

J Jan F Feb M Mar A Apr M May J June J Jul A Aug S Sep O Oct N Nov D Dec
Sow Indoors


We know how important your garden is to you. We've listened to our customers and introduced a new improved speedy delivery service, meaning Express delivery comes as standard.

*Orders to Northern Ireland have an automatic additional £3.00 delivery surcharge applied at checkout. 

Order TypeDelivery ChargeDelivery Charge
Seed only order£2.99If you purchase any other items you'll be charged the standard delivery rate of £5.99
Plants, bulbs & gardening accessories£5.99If we need to split your order into separate deliveries we'll only charge one delivery fee
Extra large or long plants & heavy items£9.99These are clearly displayed at check-out
Compost (and any other large or heavy items)£5.99

These items are subject to a delivery multiplier where orders containing 3 or 4 items will be subject to an additional £5.99 for every further 2 items added. This is automatically applied at check-out:

  • 1 - 2 bags £5.99
  • 3 - 4 bags £11.98
  • 5 - 6 bags £17.97
  • 7 - 8 bags £23.96
  • 9 - 10 bags £29.95

If you'd like more than 10 bags of compost please call our Customer Service team who can arrange for a bespoke competitive quote on 01480 774555 (standard network charges apply)

For more detail on specific delivery queries and compost delivery please click here

Delivery to outside of Great Britain

We regret we are unable to deliver any items outside of some Great Britain delivery addresses. This includes Europe, Channel Islands, Republic of Ireland, USA and Rest of World. We will update our website if this changes. 

We now deliver to Northern Ireland, additional delivery surcharges automatically apply at checkout. 

For more information about our deliveries please click here.