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Tomato Harbinger Seeds
Harbinger tomato is an early Old English variety which produces a heavy yield of good flavoured medium size fruits. This variety has the added benefit that it can be grown under unheated protection as it tolerates the cool weather well.
Product Part Number: 14808
When to sow
When to Sow Harbinger Tomato Seeds
January to April
Where to Sow
Sow seeds underglass 0.5cm(1/4 in) deep in pots or trays of good seed sowing compost and lightly cover with a sprinkling of vermiculite or compost. Place containers in a propagator at a temperature of 18–21°C .
What to do next
Prick out seedlings, once large enough to handle, into 9cm (3 1/2in) pots. Transplant to the greenhouse border soil, or individual large pots, or 3 plants per growbag when 20cm (8in) high. Can also be planted outdoors once all risk of frost has past. Plants require sideshooting and support for the best yields. Water and feed plants regularly with a high potash feed once the first truss has set.
July to October
Water regularly to avoid splitting fruits and blossom end rot.
Very high in vitamin C and lycopene.
Indeterminate - single stem, remove side shoots.