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Romanesco Broccoli - Ferme de Sainte Marthe Seeds

Brassica oleracea botrytis Romanesco
Romanesco Broccoli

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Romanesco broccoli is a remarkable Italian vegetable, similar to cauliflower in taste and texture. It forms beautiful whorled, apple green heads that are very ornamental and have a subtle, delicate nutty flavour. It is sown from May to June and harvested from August to December. Certified organic seeds.
Ease of cultivation
Beginner
Height at maturity
50 cm
Spread at maturity
50 cm
Soil moisture
Damp soil
Germination time (days)
14 days
Sowing method
Direct sowing
Sowing period May to June
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Harvest time August to December
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Description

Romanesco broccoli is a remarkable Italian vegetable, similar to cauliflower in taste and texture. It forms beautiful whorled, apple green heads that are very ornamental and have a subtle, delicate nutty flavour. It is sown from May to June and harvested from August to December.

Romanesco broccoli, also known as Roman cauliflower, belongs to the large Brassicaceae family (ex-Cole family). This biennial plant is grown as an annual for its edible flower heads that are harvested just before they start to bloom. It is native to Italy where it has been grown since the 16th century. Romanesco Broccoli has a delicate, nutty taste. It is delicious lightly steamed and added to gratins, quiches, purées or stews. It also goes very well with curry. From a nutritional point of view, it is very healthy: it is low in calories but very rich in vitamins, fibre and minerals.

Romanesco Broccoli is an easy vegetable to grow as long as you meet its basic requirements: deep, rich soil, and regular watering. It enjoys plenty of sun and generally does well in cool and rainy climates.

Harvesting: To harvest Romanesco Broccoli, simply cut off the central flower head with a sharp knife when it feels suitably compact and heavy.

Storage: Fresh Romanesco broccoli does not keep very well. It is best to eat it quickly after harvesting, although it will keep for a few days in the refrigerator. It is also possible to freeze the florets, after having blanched them in boiling salty water for a few minutes.

Good to know: For the past few years, swede midges (Contarinia nasturtii) have been causing considerable damage to brassica plants. We recommend protecting your crops with insect netting from mid-May to mid-July.

Even if the vegetable garden is first and foremost a place for growing great quality veg, it’s always a good idea to leave a bit of room for flowers. Growing flowers alongside your vegetable plants will make your general gardening experience more enjoyable and is a great way to attract pollinators and repel garden pests! Flowers such as gaillardia, marigolds, zinnias, cosmos or nasturtiums can be sown in and around the rows of vegetables. Herbs such as dill can be very useful also. Bear in mind that some companion plants self-seed easily and can be a bit invasive (borage, chives, lemon balm etc.)

NB. Organic seeds (in French "AB" for "Agriculture Biologique") are produced from plants that aren't treated with phytosanitary products (insecticides, weed killers). The seeds do not undergo post-harvest treatment. They carry the AB label and are approved by Ecocert, an independent structure.

Harvest

Harvest time August to December
Type of vegetable Flower vegetable
Vegetable colour green
Size of vegetable Medium
Interest Flavour, Colour
Use Cooking

Plant habit

Height at maturity 50 cm
Spread at maturity 50 cm
Growth rate normal

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Brassica

Species

oleracea

Cultivar

botrytis Romanesco

Family

Brassicaceae

Other common names

Romanesco Broccoli

Origin

Cultivar or hybrid

Annual / Perennial

Annual

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Planting and care

Semis :

La température de germination du Chou-Fleur Romanesco se situe autour de 15° (minimum 7° - maximum 20°) et prend environ 14 jours.

Période de semis : de mai à juin

Période de récolte : d'août à décembre

Vous pouvez procéder par semis direct en place ou préparer des plants qui seront ensuite installés au jardin à leur place définitive.

Préparation de plants : Sous abri ou en pépinière au jardin le reste de l’année (suivant la période de semis préconisée), semez les graines à une profondeur d’ 1 à 2 cm dans un bon terreau pour semis ou une terre bien fine. Couvrez légèrement avec du terreau et n’oubliez pas de maintenir le substrat humide mais non détrempé.

Lorsque les jeunes plants vous apparaissent assez forts pour être manipulés, repiquez-les en godets si nécessaire avant de les transplanter au jardin, lorsqu’aucune gelée n’est plus à craindre. Lors de la plantation, respectez les espacements préconisés pour le semis direct.

Semis direct : En terre correctement amendée et finement travaillée, tracez des sillons d’une profondeur d’un ou deux centimètres, espacés de 60 centimètres. Semez les graines et recouvrez-les d’une fine couche de terre fine. Lorsque les plantules sont bien développées, procédez à un éclaircissage en ne conservant qu’un plant tous les 60 cm environ.

 

Culture :

Le Chou Romanesco se cultive au soleil. C’est un légume gourmand, qui réclame une terre bien fumée, riche en azote et en potasse. Il convient d’effectuer, de préférence à l’automne, un généreux apport de compost mûr (environ 3/4 kg par m2), par griffage sur une profondeur de 5 cm, après avoir, comme pour toute culture potagère, bien décompacté le sol. Il n’est pas très tolérant quant au PH du sol qui devra se situer entre 5,6 et 6,5. En terre acide, il faudra veiller à relever progressivement ce PH en faisant des apports calciques sous forme de Dolomie ou de Chaux.

Seedlings

Sowing period May to June
Sowing method Direct sowing
Germination time (days) 14 days

Care

Soil moisture Wet
Disease resistance Average
Pruning No pruning necessary

Intended location

Type of use Vegetable garden
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Exposure Sun
Soil pH Neutral
Soil type Silty-loamy (rich and light), 192

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