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Brussels Sprout Jade Cross F1 - Brassica oleracea gemmifera

Brassica oleracea gemmifera Jade Cross F1
Brussels Sprout

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I absolutely love Brussels sprouts.

jean S., 09/03/2017

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More information

A very early and productive variety, hardy, well-suited for autumn crops and Mediterranean regions. This Brussel Sprout produces beautiful, firm and vibrant green heads. Sowing from March to June for a harvest from October to December.
Ease of cultivation
Beginner
Height at maturity
75 cm
Spread at maturity
50 cm
Soil moisture
Damp soil
Germination time (days)
7 days
Sowing method
Direct sowing, Sowing under cover, Sowing under cover with heat
Sowing period March to June
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Harvest time October to December
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Description

The Jade Cross F1 Brussel Sprout is a very early and productive variety, hardy, well-suited to autumn crops and Mediterranean regions. This Brussel Sprout has pretty firm and green heads. Sow from March to June for a harvest from October to December.

The Brussel Sprout is a vegetable whose axillary buds are consumed, forming small heads also called 'buttons'. This biennial vegetable, cultivated as an annual, belongs to the large family of Brassicaceae (formerly Cruciferae). It bears the Latin name Brassica oleracea gemmifera. Latin enthusiasts will appreciate the name 'Gemmifera' which refers to precious stones.

Originating, unsurprisingly, from Belgium, this sprout is a hybrid developed in the 14th century by market gardeners from Saint-Gilles (a municipality in the close outskirts of Brussels), concerned with increasing their productivity. Indeed, growing vertically, the Brussels Sprout takes up little space on the ground and allows for abundant harvests in a minimum of space.

An autumn and winter vegetable par excellence, the Brussels Sprout has a mild, slightly sweet and very comforting flavor. Cooked carefully, its delicate taste pairs well with bacon, chestnuts, and smoked bacon. It can be eaten cooked, sautéed, braised, or even gratin... Quickly steamed, it is also excellent cold in salads. It is a vegetable rich in fiber, antioxidants, and vitamins C and B.

The Brussel Sprout is a much less demanding vegetable than the majority of cabbages, it likes the sun and moderately rich soil, especially in nitrogen. Soil that is too generously fertilized would result in the production of too small, open, or burst heads.

Note: This variety is labeled F1 for "F1 hybrid" because it is a variety resulting from the cross-breeding of carefully selected parents to combine their qualities. This produces a variety that can be particularly flavorful and/or early while being resistant to certain diseases. Sometimes criticized or wrongly associated with GMOs, F1 hybrid seeds are interesting both for their uniformity and resistance, but unfortunately, their qualities do not pass on to the next generations: it will therefore not be possible to recover the seeds for later sowing.

Harvest: Brussel Sprouts are harvested starting from the bottom of the stem and by cutting the small heads with a knife.

Storage: Brussel Sprouts can be stored for 3 to 4 days in the vegetable drawer of the refrigerator. They can also be frozen very well after being blanched for 3 to 5 minutes in salted boiling water.


Gardener's tip: The main enemy of cabbage, the Cabbage White Butterfly (Pieris brassicae), is a pretty creamy white butterfly with small black spots that emerges from April-May to wreak havoc on its leaves all summer. Don't be caught off guard and opt for prevention by installing insect-proof netting tightly on market garden hoops. These nets are easy to set up and reusable to protect, for example, your carrot and leek crops.

Harvest

Harvest time October to December
Type of vegetable Leaf vegetable
Size of vegetable Medium
Interest Nutritional value, Very productive

Plant habit

Height at maturity 75 cm
Spread at maturity 50 cm
Growth rate normal

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Brassica

Species

oleracea

Cultivar

gemmifera Jade Cross F1

Family

Brassicaceae

Other common names

Brussels Sprout

Origin

Cultivar or hybrid

Annual / Perennial

Annual

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Planting and care

Sowing:

The germination temperature of Jade Cross F1 Brussels Sprouts is between 7 and 20°C (44.6 and 68°F) and takes an average of 10 days.

It is sown from March to June for a harvest from October to December.

Preparation of plants: In a heated shelter at the end of winter, in a cold greenhouse or in a nursery in the garden for the rest of the year, sow the seeds at a depth of 1 cm (0in) in a 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 be handled, transplant them into buckets if necessary and, for sowing in heated shelter, gradually acclimatize them to cooler temperatures before transplanting them to the garden when there is no longer any risk of frost.

Direct sowing: In properly amended and finely worked soil, make furrows one centimeter deep, spaced 65 cm (26in) 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 65 cm (26in) or so.

Cultivation:

Brussel sprouts are less demanding than most cabbage varieties. They thrive in moderately rich soil, especially in nitrogen. Soil that is too heavily fertilised would result in producing small, open, or burst sprouts.

They are not very tolerant of soil pH, which should be between 5.6 and 6.5. In acidic soil, it will be necessary to gradually raise the pH by adding lime.

Brussel sprouts, like all cabbages, are quite susceptible to diseases such as clubroot and pests (cabbage white butterfly, cabbage fly, flea beetle, gall midge, etc.). It is very important, for this crop, to pay attention to crop rotations.

 

Seedlings

Sowing period March to June
Sowing method Direct sowing, Sowing under cover, Sowing under cover with heat
Germination time (days) 7 days

Care

Soil moisture Wet
Disease resistance Good
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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