Broccoli Calabrese Green - Brassica oleracea italica
Broccoli Calabrese Green - Brassica oleracea italica
Brassica oleracea var. italica Vert Calabrais
Broccoli
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Description
The Calabrian Green Broccoli is a traditional, semi-late variety that can be harvested over a fairly long period of time. Sow from February to April under cover and from April to June in open ground for a harvest 60 days later.
Offering beautiful firm flowers, mostly green but sometimes purplish or white, Broccoli is a vegetable whose flowers are consumed just before they bloom. It belongs to the large family of Brassicaceae (formerly Cruciferae) and bears the Latin name Brassica oleracea italica.
Originally from southern Italy, this cabbage, with its mild flavour, is now highly appreciated as it lends itself to many preparations. It is best consumed quickly steamed and then prepared in various ways: quickly sautéed, gratin, quiche, mashed, soup... It is a low-calorie vegetable and rich in vitamin C.
Like almost all cabbages (Brussels sprouts being the exception), Broccoli is a demanding vegetable, requiring excellent organic fertiliser and regular moisture.
Harvest: Broccoli is harvested by cutting, with a knife, in two stages: first the terminal flower and then the lateral flowers.
Storage: Broccoli does not keep very well. It is best to consume it quickly after harvest. It can be stored for a few days in the refrigerator. You can also freeze it after blanching for 3 minutes in salted boiling water.
The gardener's tip: In recent years, the Nasturtium Leafminer (Contarinia nasturtii), a small winged piercing and sucking fly, has been causing havoc on Broccoli in certain regions such as Brittany. We recommend opting for prevention by installing a insect-proof cover, tightly secured on market arches, throughout the flight period, from mid-May to mid-July. These covers are easy to install and reusable to protect, for example, your carrot and leek crops.
Harvest
Plant habit
Foliage
Botanical data
Brassica
oleracea var. italica
Vert Calabrais
Brassicaceae
Broccoli
Cultivar or hybrid
Annual
Planting and care
Sowing :
The germination temperature of the Calabrian Green Broccoli is around 15° and takes about 14 days.
It is sown from February to April under cover and from April to June in open ground for a harvest 60 days later.
You can proceed with direct sowing in situ or prepare plants that will then be planted in the garden in their final position.
Preparing plants: at home or in a heated greenhouse, from late autumn to late spring, or in a cold greenhouse or nursery for the rest of the year, sow the Broccoli seeds to a depth of 1 cm (0.5 in) in good seed compost. Lightly cover with compost or vermiculite. Don't forget to keep the substrate moist but not waterlogged!
When the young plants appear strong enough to handle, transplant them into pots and, for sowing under cover, gradually acclimatise them to cooler temperatures before transplanting them into the garden, when there is no longer any risk of frost.
Direct sowing: In properly amended and finely worked soil, make furrows about 1cm deep, spaced 50 to 60 cm (20 to 24in) apart. Sow the seeds and cover them with a thin layer of fine soil, when the seedlings are well developed, thin them out, leaving one plant every 50 cm (20in) or so.
Cultivation :
Broccoli is a demanding vegetable that requires well-fertilised soil, rich in nitrogen and potassium. It is advisable, preferably in autumn, to generously apply mature compost (about 3/4 kg per m2), by scratching it into the soil to a depth of 5 cm (2in), after having, as with all vegetable crops, loosened the soil well. It is not very tolerant regarding soil pH, which should be between 5.6 and 6.5. In acidic soil, it will be necessary to gradually raise this pH by making calcium additions in the form of Dolomite or Lime.
Broccoli, like all cabbages, is quite susceptible to diseases such as Clubroot and pests (Cabbage White Butterfly, Cabbage Fly, Flea Beetle, Cabbage Midge...), so it is very important, for this crop, to pay attention to crop rotations.
It is beneficial to associate it with many vegetables such as tomato, lettuce... But avoid planting it next to other Brassicas as well as zucchini, fennel, lamb's lettuce, leek, and strawberry.
Seedlings
Care
Intended location
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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