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Romanesco Navona Seeds

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Packet of Romanesco F1 Navona SeedsF1 Navona is a romanesco cauliflower producing a uniform crop of dark green, turreted curds with no bracts. It is a vigorous variety with good field holding properties and comes well recommended.

Make successional sowings for staggered cropping. This seed is only available as treated seed.

Average Packet Contents 20 Seeds

Romanesco Navona Grow Notes
When to Sow Seeds: Mar, Apr, May
Germination Temperature: 10 ℃ + Cover Seeds: Lightly
Time to Germination: 7 Days Frost Hardy: Yes
Spacing Between Plants: 50cm Row Spacing: 50cm
Plant Height: 50cm Planting Position: Sun

 

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow:                        
Plant Out:                        
Harvest:                        

Seed Sowing

Seeds can be sown in pots or modular trays, under glass between March and May. Fill the pots or trays with seed compost and sow 2 seeds per module at around 1cm deep. Cover with fine compost and lightly press down to firm. Next, apply water with a watering can and rose attachment. Remove the weakest seedling when large enough to handle. After 2-3 weeks you can move the plants to a cold frame to harden off before planting out in the open during May.

Alternatively, you can sow directly outdoors from late April to June. Create a shallow furrow about 1cm deep using the edge of a hoe. Sow 2-3 seeds at 45cm intervals and lightly cover with soil. Use the back of a rake to gently firm down the surface and then water with a watering can with a rose attachment. After germination, reduce to one plant per 45cm spacing. If growing in rows, allow 60cm between rows.

Planting Out

Plants that have been started off under cover and subsequently hardened off can be moved to their final planting positions during April. Space the plants 45cm apart and 60cm between rows. Ensure the soil is firmed to support the plants and then water them in. If frosts are forecast, protect the young plants with glass or polythene cloches at night.  

General After Care

Water the young plants often to ensure they do not dry out. Keep the soil between the plants and rows clear of weeds to discourage pests and diseases. Applying a mulch of compost or bark would help in retaining moisture and also discourage the cabbage root fly from laying eggs. As the plants grow, feed the plants by adding a sprinkling of general fertiliser to the soil every 2-3 weeks to help them develop healthy foliage and florets. Alternatively, you can apply a liquid vegetable fertiliser at every other watering.

Read our blog articles on growing Romanesco Cauliflower:

Blog: How to Grow Romanesco Cauliflower from Seeds

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Customer Reviews
Romanesco Navona
Write a Review and share your opinions!
1 Review:

Superb crop this year (2012)
Rating:
28 November 2012  |  Michael

I`ve always had disappointing results trying to grow Romanescos on my allotment until I tried these. Large clean tasty curds that have also frozen very well. Already re-ordering Navona for next season.