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Kabocha squash Flexi Kuri F1

Cucurbita maxima Flexi Kuri F1
Kabocha squash, Red Hokkaïdo, Okkaido, Onion squash, Potimarron

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Flexi Kuri F1 organic is an early, generous, and trailing variety. Each young plant yields several fruits weighing 1.2 to 1.6 kg, with a vibrant orange colour, thick, sweet flesh, and a chestnut-like flavour. Easy to grow, sow from April to May for a harvest from September to October. Resistant to major cucurbit viruses, it is best grown organically. Its fruits keep well after picking.
Ease of cultivation
Beginner
Height at maturity
40 cm
Spread at maturity
1.50 m
Soil moisture
Moist soil
Germination time (days)
5 days
Sowing method
Direct sowing, Sowing under cover, Sowing under cover with heat
Sowing period April to May
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Flowering time June to September
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Harvest time September to October
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Description

The Flexi Kuri F1 organic squash is an early and prolific hybrid variety. This vigorous, spreading plant produces several uniform fruits weighing 1.2 to 1.6 kg, with a thin, bright orange skin. Its thick, sweet, and flavoursome flesh is reminiscent of chestnuts, making it a reliable choice in the kitchen, for both savoury and sweet recipes. Resistant to the main cucurbit viruses (ZYMV, WMV, PRSV), this squash is easy to grow in the vegetable garden as well as in organic farming. 
Sow from April to May, for a harvest from September to October. When fully ripe, the fruits keep well for a long time after picking.

Pumpkins and squashes like rich, loose, and well-drained soil, with a good sunny exposure. Like all cucurbits, they love warmth (ideally between 18 and 22 °C) and require regular watering, especially during growth and fruiting. It is advisable to mulch around the base to retain moisture and limit weeds.

The potimarron is a highly prized winter squash. Low in calories, rich in fibre and vitamins, it lends itself to many preparations: soups, veloutés, purées, gratins, but also cakes and desserts. Its mild, slightly sweet flavour appeals to both children and gourmets.
Squashes belong to the large cucurbit family. Depending on the variety, the fruits can vary in shape (round, elongated, flattened), size (from a few hundred grams to several tens of kilograms) and colour (orange, green, beige, variegated).

There are two main types of squashes: summer squashes, harvested young and eaten quickly (like courgettes), and winter squashes, which include the White Pattypan Squash, the Waltham Butternut Squash and the potimarron. The latter are harvested when ripe and can be stored for several months.
The Flexi Kuri F1 organic squash is the result of targeted selection and cross-breeding aimed at surpassing the performance of an already popular cultivar, 'Orange Summer', by bringing notably better flavour and excellent storage. It was developed as part of the breeding programmes of Enza Zaden, a recognised figure in vegetable seeds.

The Flexi Kuri F1 potimarron has vigorous, spreading growth; the plant develops long, creeping stems that spread widely on the ground. Its large, dark green leaves naturally protect the fruits from direct sun, thus limiting the risk of scorching. Flowering is abundant and consists of male flowers, borne on long peduncles, and female flowers, recognisable by the small swelling in the shape of a mini-potimarron at the base. The latter only develop into fruit after pollination by insects, particularly bees. The resulting fruits are regular, with a rounded pear shape and a smooth, thin, bright orange skin. Their thick, sweet flesh has a mild chestnut flavour. Medium-sized (1.2 to 1.6 kg), they are perfect for family consumption and keep well for a long time after harvest.

Harvest: pick the fruits when their skin is well-coloured and hardened, and the stalk begins to dry. Harvesting with a piece of stalk (2–3 cm) extends storage.

Storage: stored in a dry, cool, and well-ventilated place, Flexi Kuri potimarrons keep for several months without losing their taste quality.

The gardener's tip: plan for space in the vegetable garden, as this variety is spreading and spreads widely. To optimise the harvest, mulch the soil and pinch the stems after the 2nd or 3rd branching to encourage fruiting.
To save space and protect your fruits from rot, you can grow pumpkins and squashes on supports such as wire mesh or sturdy frames. 
During fruit ripening, you can place a tile or a brick, for example, between the ground and the fruit to protect it and limit premature rotting. A thick mulch will also do the trick.

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Harvest

Harvest time September to October
Type of vegetable Fruit vegetable
Vegetable colour orange
Size of vegetable Medium
Interest Nutritional value, Colour, Productive, Disease resistant
Flavour Sweet
Use Cooking

Plant habit

Height at maturity 40 cm
Spread at maturity 1.50 m
Growth rate normal

Foliage

Foliage persistence Annual
Foliage colour green
Aromatic? Fragrant foliage when creased

Botanical data

Genus

Cucurbita

Species

maxima

Cultivar

Flexi Kuri F1

Family

Cucurbitaceae

Other common names

Kabocha squash, Red Hokkaïdo, Okkaido, Onion squash, Potimarron

Origin

Cultivar or hybrid

Annual / Perennial

Annual

Product reference249010

Planting and care

Soil Preparation for Organic Flexi Kuri Squash

Cucurbits prefer loose, rich, and deep soil. Dig a hole at least 40 cm in all directions and fill it with well-rotted manure and/or compost. In addition to good fertilisation, they will need plenty of water and warmth and a lot of space (at least 1 square metre).

Sowing

Before sowing, you can soak the seeds for 24 hours in a little water to stimulate germination.

Either - 3 weeks before transplanting, under a cold frame or in a warm place (16 to 30°C), from March, sow 2 or 3 seeds per pot or container large enough for root development. Germination will occur 3 to 5 days later. Keep only the most vigorous young plant. Plant out in the open ground after mid-May, once all risk of frost has passed. It is important not to sow too far in advance, as the young plants could become leggy and/or their overly developed root system might not withstand transplantation.

Or - from mid-May, directly in the final position, in stations of 3 seeds, as soon as frosts are no longer a worry and the soil is well warmed. Thin out after 2 to 3 weeks to keep only the most vigorous young plant. Cover the soil with organic matter (compost, grass clippings, leaves...), which will help keep the soil moist.

Watering

From sowing or planting, water generously, taking care not to displace the seeds, and then regularly during fruit formation. However, once the fruits have formed, during ripening, limit watering.

 

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17,50 €
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14,50 €

Seedlings

Sowing period April to May
Sowing method Direct sowing, Sowing under cover, Sowing under cover with heat
Germination time (days) 5 days

Care

Soil moisture Wet
Disease resistance Good
Pruning instructions For large-fruited varieties, pruning is necessary to control growth and encourage fruit set. Carry out from June to September. On the main stem, after 4 to 5 true leaves have formed, cut back after the second leaf. Then, on the lateral shoots that develop without fruit, prune after the fifth leaf as soon as they have 8 leaves. Next, cut back 2 leaves after each fruit forms, but do not keep all the fruits. Depending on the variety and the expected fruit size, it is advisable to keep 1 to 3 fruits for the largest specimens, 5 to 6 to obtain small pumpkins, squashes, or potimarrons, and 8 to 10 for mini squashes. Remove fruitless shoots to limit vegetative growth.
Pruning No pruning necessary

Intended location

Type of use Vegetable garden
Hardiness Hardy down to +1.5°C (USDA zone 10b) Show map
Ease of cultivation Beginner
Soil light
Exposure Sun
Soil pH Any
Soil type Silty-loamy (rich and light), 130

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