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Broccoli Marathon F1

Brassica oleracea italica Marathon F1
Broccoli

3,5/5
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They have come into bloom.

Thérèse D., 20/08/2017

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This plant carries a 6 months recovery warranty

More information

Graden Merit
'Marathon F1' Broccoli is a reliable, very adaptable RHS Award of Garden Merit winner. It forms attractive, densely packed blue-green heads that are perfect for freezing. This excellent quality, productive and disease-resistant variety is sown from April to June and harvested from July to October (4 months until maturity).
Ease of cultivation
Beginner
Height at maturity
60 cm
Spread at maturity
50 cm
Soil moisture
Damp soil
Germination time (days)
14 days
Sowing method
Direct sowing
Sowing period April to June
J
F
M
A
M
J
J
A
S
O
N
D
Harvest time July to October
J
F
M
A
M
J
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A
S
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D

Description

'Marathon F1' Broccoli is a reliable, very adaptable RHS Award of Garden Merit winner. It forms attractive, densely packed blue-green heads that are perfect for freezing. This excellent quality, productive and disease-resistant variety is sown from April to June and harvested from July to October.

Broccoli (Brassica oleracea italica) is a popular vegetable belonging 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 Southern Italy where it has been grown for human consumption since Roman times. Broccoli has a mild taste with just a hint of bitterness. It is delicious lightly steamed and added to gratins, quiches, purées or stews. From a nutritional point of view, it is remarkable: its energy value is low but it is very rich in vitamins A, C, B6 and B9; it also contains lots of fibre, potassium and iron.

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: Broccoli is harvested in two stages. First, remove the central flower head with a a sharp knife. Then leave the rest of the plant in place until the side shoots are ready to be harvested.

Storage: Fresh 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 it, after having blanched it 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: This variety is marked F1 for "F1 hybrid" meaning that its qualities are derived from carefully selected parent plants. This results in a variety that is both full of flavour and resistant to diseases. Sometimes criticized or wrongly assimilated to GMOs, F1 hybrid seeds have the advantage of producing reliable, uniform, disease resistant plants. Unfortunately, these qualities will not be passed on to following generations.

Harvest

Harvest time July to October
Type of vegetable Flower vegetable
Vegetable colour green
Size of vegetable Medium
Interest Flavour, Productive, Disease resistant
Use Cooking

Plant habit

Height at maturity 60 cm
Spread at maturity 50 cm
Growth rate normal

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Brassica

Species

oleracea

Cultivar

italica Marathon F1

Family

Brassicaceae

Other common names

Broccoli

Origin

Cultivar or hybrid

Annual / Perennial

Annual

Product reference34821

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Planting and care

Sowing:

The germination temperature of Broccoli Marathon F1 is around 15°C and takes about 14 days.

It can be sown from April to June for a harvest from July to October.

You can either sow the seeds directly in the ground or prepare young plants that will later be transplanted to their final position in the garden.

Preparing young 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 at a depth of 1 cm 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 handle, transplant them into pots and, for seeds sown in a heated greenhouse, gradually acclimatize them to cooler temperatures before transplanting them into the garden, when there is no longer any risk of frost.

Direct sowing: In well-amended and finely worked soil, create furrows about 1 cm deep, spaced 50 to 60 cm apart. Sow the seeds and cover them with a thin layer of fine soil. Once the seedlings are well developed, thin them out, leaving one plant every 60 cm.

 

Cultivation:

Broccoli is a nutrient-demanding vegetable that requires well-rotted, nitrogen- and potassium-rich soil. It is advisable to apply a generous amount of mature compost (about 3/4 kg per m2) in autumn, by raking it in to a depth of 5 cm, after loosening the soil as you would for any vegetable crop. It is not very tolerant of soil pH, which should be between 5.6 and 6.5. In acidic soil, it is necessary to gradually raise the pH by adding calcium 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, Leaf Miner...), so it is very important for this crop to practice crop rotation.

It is beneficial to associate Broccoli with many vegetables such as tomatoes, lettuce... But avoid planting it near other Brassicas as well as zucchini, fennel, lamb's lettuce, leeks, and strawberries.

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Seedlings

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