fraisier (Fragaria)

Publié mercredi 06 février 2013 Commenter 59
fraisier

Sommaire

fraisier : en bref

Nom scientifique
Fragaria
Provenance / Origine
hémisphère Nord, zones tempérées
Température
craint les gelées printanières
Exposition à la lumière
soleil ou mi-ombre
Reproduction
prélèvement des plants à l'extrémité des stolons
Composition du sol
terre limoneuse, bien drainée
Hauteur
20 cm
Entretien
paillage conseillé, éventuellement traitement avec de la bouillie bordelaise, arrosage régulier en été
Type biologique
vivace
Maladies
oïdium, marbrure chlorose
Type de feuillage
caduc
Insectes et animaux ravageurs
pucerons, nématodes, limaces
Période de récolte
Mai-octobre selon les variétés

Classification de la plante

Règne
Plantae
Sous-règne
Tracheobionta
Division
Magnoliophyta
Classe
Magnoliopsida
Sous-classe
Rosidae
Ordre
Rosales
Famille
Rosaceae 

Le fraisier issu de nombreuses sélections

Le fraisier le plus cultivé de nos jours est en faite un hybride entre deux variétés de Fragaria, à savoir F.chiloensis et F.virginiana. C’est au XVIIIème siècle que l’hybridation a été pour la première fois réalisée. La saveur acide des fruits obtenus leur a valu le surnom de « fraise ananas ». De nombreux croissements, notamment avec des fraisiers sauvages, ont permis de faire émerger les variétés connues aujourd’hui.

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On dénombre plus de 60 variétés ! Autant dire que vous avez le choix ! Certaines sont remontantes, ce qui signifie qu’elles produisent du début de l’été à l’automne. C’est le cas de 'Ostara' et 'Rabunda'. Les variétés précoces telles que ‘Aliso’ ou la fameuse Gariguette fructifient au printemps, alors que les variétés tardives telles que ‘Bogota’ ou ‘Hapil’ produisent en été.

Le fraisier, fragile mais incontournable

Le fraisier est peu rustique, ce qui signifie que les fraises achetées dans le commerce ont souvent subies de nombreux traitements contre les maladies et les ravageurs. Raison de plus pour les cultiver au jardin !

Plantez les plants de préférence au début du printemps. L’idéal est de constituer des rangées légèrement surélevées, éventuellement recouvertes d’une bâche plastique pour économiser l’eau. Si vous ne disposez pas de bâche, paillez les fraisiers. Cela diminuera l’évaporation et protégera du gel. Le fraisier peut résister à des gelées hivernales de -25°C. C’est plutôt les gelées de printemps qui sont à craindre : elles grillent les fleurs et empêchent toute récolte.

L’utilisation de bouillie bordelaise peut être une bonne solution pour lutter contre les maladies. Arrosez copieusement en été, le fraisier résiste mal à la sècheresse. Pour économiser l’eau, vous pouvez mettre en place un système de goutte à goutte. Coupez régulièrement les stolons qui se forment, sauf lors de la troisième ou quatrième année où vous pourrez les prélever pour régénérer votre plantation. En effet, après un pic de récolte lors de la deuxième année, la production de fraise diminue peu à peu. Si les maladies sont trop fréquentes, rachetez des plants dans le commerce qui auront moins de viroses.

Il ne vous reste plus qu’à vous régaler avec les fraises de votre jardin en les consommant nature, en confiture, en pâtisserie, … Les idées de recettes ne manquent pas !

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The fraisier is a light and delicate French pastry, similar to a cream puff, but made with layers of puff pastry dough and custard filling. The name means "strawberry" in French, and this dessert can be found in many French patisseries. Although called a pie, it is not always filled with strawberry jam or preserves; sometimes it is filled with whipped cream sprinkled with powdered sugar or fresh strawberries. The fresh berries may be arranged on top of the whipped cream or they may be tucked into the pockets of the dough, then topped with the cream. The filling is made from an egg yolk batter that is poured over the frozen puff pastry, then baked until golden brown. The finished dessert is cut into wedges and served warm. Because this dessert contains raw eggs you should use pasteurized whole eggs, or pasteurized egg whites in place of some of the whole eggs in the recipe if you are concerned about consuming raw eggs.
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