Frigo A Korona Strawberry Plant

Korona strawberry variety technical sheet

• Remontant: Non-Remontant
• Precocity: Mid-Early
• Harvest period: Between the end of May and the end of June
• Shape, texture, appearance of the Fruit: A little elongated, heart-shaped
• Fruit color: Shiny dark red
• Taste characteristics: Considered "exceptionally sweet", juicy
• Fruit Size: Considered "exceptionally sweet", juicy
• Disease resistance: Limited shelf life, very resistant to wilting, little resistance to mildew
• Yield, management and marketing: Like Verdi, large fruits at the first harvest then decreases during the season
• Commercial use / recommended marketing channel: Processing
• Our advice: Perfect for transformation and pastries

Order your professional strawberry plants

Fraisiverse, a specialist wholesale supplier of strawberry plants , offers you the Korona variety, known for its exceptional sweet taste and large size. Buying your strawberry plants guarantees you a direct supply from specialized nurseries, ensuring professional quality and competitive producer prices . Our plants benefit from proven varietal resistance and offer a high yield , ideal for optimizing your harvests from late May to late June. Also benefit from dedicated technical support and personalized advice to adapt the crop to your land. Our fast and careful delivery throughout France allows you to plan your plantings without interruption. Order now or request a free quote to secure your volumes. The Korona variety is perfect for direct sales and processing thanks to its flavor and juiciness. Reserve now and take advantage of our decreasing prices to maximize your margin.

Varietal and Morphological Characteristics

Pomological and Phenotypic Criteria

The Korona strawberry variety stands out as a non-remontant strawberry , classified in the category of mid-season to mid-early varieties. Its production is therefore concentrated in a single and intense period, generally positioned from the end of May to the end of June in the French climate. Visually, the Korona strawberry has a bright dark red color , uniform over its entire surface. This fruit, of large caliber , adopts a slightly elongated heart shape, sometimes conical, which can reach a diameter of 25 to 35 mm and an average weight of 25 grams , with the capacity to equal the size of an egg for the first harvests.

Its flesh, a dark red that is also homogeneous inside, has a juicy and soft texture , appearing tender under the palate. Unlike varieties seeking crunchiness, the Korona offers a melting, almost creamy sensation, with a firmness level described as low to medium , measured between 0.5 and 0.8 kgf (or 5 to 8 N) according to penetration tests. Its taste is exceptionally sweet and very aromatic , characterized by a high Brix value , typically between 8 and 10% at commercial maturity. The achenes, or small grains on the surface, are not very prominent and discreet when chewed. The plant itself displays very great vigor.

Resistance to Environmental Constraints

However, it is crucial to note its tolerances to abiotic stresses . Korona is not particularly known for its drought resistance , being in the low to medium category, thus requiring regular irrigation to maintain fruit quality and size. Its tolerance to root asphyxiation is medium, which requires well-drained soil and the avoidance of prolonged waterlogging situations. Regarding calcareous soils , its tolerance is also low to medium, with a risk of iron chlorosis being increased if the active lime content exceeds 7-8% .

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Cultural Conduct Protocols

Planting Parameters and Optimal Density

To fully exploit the Korona's potential, rigorous crop management is essential. The variety's fruit size decreases with each harvest, leading to the recommendation of annual cultivation to ensure optimal yields and quality.

Regarding planting spacing, a spacing of 30 to 45 cm between plants in the row and 90 to 120 cm between rows is recommended. These arrangements promote excellent aeration of the plants, an essential factor in limiting the risks of fungal diseases to which Korona can be sensitive. The resulting planting density for professional cultivation, particularly with frigo plants, is approximately 35,000 plants per hectare .

Water Management and Rational Fertilization

Irrigation should be regular , especially during the critical flowering and fruiting phases, while avoiding excess stagnant water. A light, organic-rich, well-drained soil with a pH between 5.5 and 6.5 is ideal for this variety.

Seasonal Intervention Planning

Flowering in April exposes the Korona to spring frosts, making the use of a forcing veil relevant to protect the plants in the event of a proven risk.

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Productive and Commercial Performance

Yield Potential and Harvest Schedule

The Korona strawberry plant is distinguished by its high early season yield . Under optimal growing conditions and with careful management, a plant can reach up to 1.2 kg of fruit at maturity. Based on a professional density of 60,000 to 65,000 plants per hectare , this can translate into an impressive yield of 60 to 75 tonnes per hectare for the best-performing plots. However, under more common growing conditions in France, an average yield of 45 to 60 tonnes per hectare is more frequently observed, while a more conservative estimate in open fields is around 20 to 30 tonnes per hectare at a density of 40,000 to 45,000 plants/ha.

Being a non-remontant variety , Korona offers a grouped and abundant harvest over a short period. Its medium-early precocity places the main harvest between late May and late June . More precisely, approximately 70% of the total production is concentrated in a 3-4 week window, typically coinciding with weeks 22 to 25 of the calendar year, i.e. from late May to mid-June. This concentration allows for efficient planning of harvest teams.

Quality Criteria and Commercial Outlets

The Korona strawberry plant is primarily intended for fresh consumption . Its large, attractive fruits in the first harvest and good taste make it a popular variety for markets, large-scale distribution and direct sales. It is also very well suited to processing , particularly for jam and pastries, due to its sweet and juicy flavor. Freezing is also an option, although its mass industrial use is less of a priority than for other varieties specifically dedicated to these niches.

However, its tender flesh and low to medium firmness imply a short shelf life when fresh and a sensitivity to picking injuries, thus limiting its capacity for long-distance transport and long supply chains. This directs its marketing towards short circuits or rapid sales after harvest. At the peak of production, the percentage of first category fruit (class I) is high, estimated between 75 and 85% , with a waste rate generally lower than 10% at the beginning of the period. Size uniformity is excellent at the peak, producing homogeneous batches, a major asset for packaging and sale. However, this uniformity tends to deteriorate after the peak, with fruit size decreasing.

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Integrated Protection and Field Returns

Bioaggressor Control Strategy

In terms of health management, Korona has strengths and points of vigilance. It is known for its good resistance to Verticillium (wilt) and Phytophthora fragariae (red crown), as well as to powdery mildew . However, it shows a slight sensitivity to Botrytis (grey mold) and a more marked sensitivity to downy mildew , requiring increased vigilance and preventive measures, including good crop aeration and, if necessary, fungicide applications.

Faced with common pests such as thrips, aphids, spider mites, weevils (Anthonomus rubi) and Drosophila suzukii , no specific resistance has been documented for Korona. Management of these pests is therefore based on standard integrated pest management methods: regular monitoring of populations (with a recommended intervention threshold of 2.1 to 4 thrips per flowering flower ), use of crop auxiliaries, and the application of targeted treatments if pest pressure exceeds economic thresholds. However, the precocity of Korona makes it less exposed to Drosophila suzukii, whose populations tend to increase later in the season. Finally, it is important to note that Korona is susceptible to Xanthomonas fragariae (angular leaf spot), and is not recommended due to its tolerance to this bacterium. The use of certified plants and rigorous sanitary practices are imperative to limit risks.

Summary of Professional Feedback

Growers who have added Korona to their range appreciate its ability to quickly produce large strawberries , which are particularly valuable at the start of the season. Its sweet flavor and melting texture are often acclaimed by consumers, making this variety ideal for niche markets or direct sales . Feedback also highlights its robustness against wilting , which makes it safe to grow on at-risk soils. Nevertheless, attention to protection against mildew and water management is a recurring point, as is the need for annual renewal of plants to maintain large fruits throughout the harvest period. Its versatility in processing, particularly in jam, is also an advantage for diversifying outlets.

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To summarize: Our Korona strawberry plants

At Fraisiverse , we offer you a rigorous selection of Korona strawberry plants, adapted to the demanding needs of professional producers. As a specialist wholesale supplier of strawberry plants , we guarantee certified, healthy and uniform batches, ready to offer a high yield from the first season. The Korona is distinguished by its sweet taste, its large size and a grouped harvest in mid-season, ideal for optimizing sales on markets or in short circuits. You can buy Korona strawberry plants directly from our sales team, with technical support to adapt density, irrigation and health protection to your local conditions. Thanks to our experience, specialist wholesale supplier of strawberry plants , we ensure a reliable supply and advice to fully exploit the potential of your plots. Buying Korona strawberry plants allows you to benefit from a variety robust against Verticillium and Phytophthora fragariae, while producing very aromatic fruits. Our optimized logistics offer you fast and careful delivery throughout France, reducing the time between receipt and planting. With a wholesale supplier specializing in strawberry plants , you invest in quality and performance, while benefiting from competitive pricing opportunities. For your next planting, buying Korona strawberry plants from Fraisiverse means choosing a reliable partner for your harvests.