Celeriac Giant Prague

Celeriac Giant Prague — variety description

Celeriac Giant Prague (Apium graveolens) is a biennial crop grown for harvest in the first year, of the celery family (Apiaceae). The roots of Prague Giant are globe-shaped with a slightly flattened base. With green leaves, this variety stores well and is full of good flavour.

Harvest from late September onwards. Celeriac is delicious if puréed together with potatoes.

Celery is grown for its aromatic leaves, juicy stalks or large roots (celeriac) – indispensable for soups, stews and salads.

Key features

• Measured germination rate of the batch: 85%
• Seeds per packet: 1530–2070 pcs (1 g)
• Seed origin: Netherlands
• Sowing: March – May; seedlings
• Harvest: July – September
• Position: sunny spot

When to sow Celeriac Giant Prague

Celeriac Giant Prague seeds are sown in March – May. Harvest in July – September. The months are a guide for a temperate climate — in warmer areas sow 1–2 weeks earlier, in cooler or upland areas, later.

How to sow and grow Celeriac Giant Prague

• Sowing method: seedlings
• Depth: 0.2–0.3 cm (in light)
• Spacing: 30–40 cm
• Germination: 14–21 days at 18–22 °C
• Position: sunny spot

Start sowing indoors from late winter to mid-spring. Optimal soil temperature: 15-24°C. Seeds take up to 20-30 days to germinate. Sow seeds at a depth of no more than 0.5 cm. and 3 seeds per pot. Celery needs rich, moist soil. Add compost to the soil and apply half a cup of organic fertiliser per 1.5 m. Transplant when the seedlings are 10-12 cm tall. Avoid transplanting until night temperatures reliably reach 10°C or higher. Sow at a spacing of 30 cm. apart in rows at least 45 cm apart. apart. Water often. For the best flavour and longer storage, water the plants the day before harvesting. The stalks on the outside of the plant can be picked at any time. The whole plant can be harvested once it reaches the desired size, but you can also leave the plant in the garden and take only what is needed, leaving the root intact. Celery is a good companion to beans, cucumber, garlic, leek, lettuce, onion and tomatoes.

The seeds are tiny and germinate in light — just press them onto the moist substrate. Requires rich, constantly moist soil.

Harvest and use

Leaf celery is cut throughout the season; celeriac is harvested in October.

Frequently asked questions

When should Celeriac Giant Prague be sown?

The recommended sowing months are March – May. Sowing method: seedlings.

How many seeds are in the packet?

The packet contains 1530–2070 seeds, pack size 1 g.

What is the germination rate of the seeds?

The measured germination rate of this batch is 85%. The test was carried out under controlled laboratory conditions; in the field, emergence depends on soil, temperature and moisture.

Why does celery germinate slowly?

The seeds are tiny and need light and constant moisture — they germinate in 2–3 weeks.