Purple Basil

Ocimum basilicum 'Purpurascens'

Intense aromatic purple foliage.

Excellent source of vitamin K, magnesium, and antioxidants like polyphenols
Promotes digestion, reduces bloating, and improves intestinal comfort
Natural anti-inflammatory and antibacterial properties, protects against oxidative stress

0.50 €

PESM: 16.00 €

1 plant

Origine
Pays-Bas

Plant Profile

Eau : High

Hauteur : 45 cm

Espacement : 25 cm

Cultivation Calendar

JFMA MJJA SOND

Sowing

Planting

Harvest

Difficulty

Beginner

Yield

2.0 kg per plant

Life Cycle

Annuelle

Growing Location

Balcony

Description

The Purple Basil is a annual herb with a bushy and compact growth habit. An iconic variety for pesto, its large leaves provide a powerful and distinctive aroma. Its cultivation is subtle, requiring heat and light, as well as well-drained soil to prevent fungal diseases. Pinching the flower spikes stimulates leaf production. In the garden, its flowers are very nectar-rich, attracting pollinators and actively contributing to biodiversity.

Growing Tips

Preparation and Optimal Conditions for Sowing Basil

Basil is a Mediterranean plant that particularly enjoys seed sowing under cover in spring, between March and May depending on your region. To successfully sow basil seeds, prepare a light and well-drained substrate, made of horticultural soil mixed with a bit of perlite, which ensures optimal aeration for the seeds. The soil temperature should be between 18 and 25 °C to ensure quick and uniform germination. Sow your seeds very finely, barely covered with substrate, as they need light to germinate: a simple layer of 2 to 3 millimeters is sufficient. Regularly moisten by fine spraying or very gentle watering, keeping the substrate moist without waterlogging it. Place your sowing containers in a warm and bright location, near a sunny window or under a garden shelter.

Germination and Care of Young Basil Plants

Expect 7 to 10 days to see the first seedlings, provided that humidity remains constant and temperature stable. No pretreatment is necessary for basil: its seeds germinate naturally without stratification. Once the seedlings have developed their first two true leaves (about 3 weeks after germination), thinning or transplanting into individual pots becomes essential to prevent leggy growth. Space the young plants at least 5 to 8 centimeters apart, or transplant them into small pots filled with quality substrate. Always maintain a moderate humidity and good light. This crucial phase prepares your plants to become robust and vigorous, ready for the next steps in your organic kitchen garden cultivation.

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Key Points

Temperature: 22°C optimal, tolerates 20-25°C
Humidity: Constant humidity, light daily spraying
Light: 12-14 hours of clear indirect light per day
Transplanting: 15-20 days after emergence, first true leaf

Conditions and Preparation for Planting Purple Basil

Planting of Purple Basil occurs after the last frosts, when the air temperature regularly reaches 18 to 20 °C minimum and the soil has warmed to at least 15 °C. This window generally opens between May and June depending on your region. Prepare your vegetable garden soil by performing a careful weeding and a deep loosening to about ten centimeters, then enrich it with mature compost or organic horticultural soil at a rate of two to three liters per square meter. A week before planting, gradually acclimate your young plants by exposing them for a few hours a day to outdoor light, sheltered from the wind: this hardening off ensures better establishment. A few hours before planting, immerse the root balls in warm water or perform a light root pralinage by coating them with a soil-water mixture to promote root contact and immediate water absorption.

Planting and Installation of Purple Basil Seedlings

Plant each root ball at a depth such that the crown (stem-root junction) is level with the soil, without pushing it deeper to avoid root suffocation. Dig a hole slightly wider than the root ball, insert the seedling, then gently firm the soil around it, eliminating air pockets. Immediately perform a generous watering in a basin to settle the plant and moisten the substrate. Maintain a spacing of 25 to 30 cm between plants and 40 cm between rows to ensure good air circulation of the foliage and prevent fungal diseases. Promptly apply an organic mulch (straw, dead leaves, or refined compost) 3 to 4 cm around each plant, keeping a few centimeters distance from the crown. In very sunny climates or at the beginning of the cool season, a forcing cover can be maintained for 7 to 10 days to enhance establishment and protect against temperature fluctuations.

Key Points

Depth: Place the crown level with the soil, do not bury
Spacing: 25–30 cm between plants, 40 cm between rows
Watering: Generous watering in a basin, keep soil moist but not waterlogged
Mulch / Protection: Organic mulch 3–4 cm (straw, leaves, compost)

Growth and vigor management of the plant

Maintenance of Genovese basil relies on a regular and controlled water balance. Water two to three times a week depending on climatic conditions, favoring a supply at the base to avoid leaf moisture; the substrate should remain moist without ever becoming waterlogged, as excess water promotes root asphyxiation. A light organic mulch (straw, refined compost) retains moisture and regulates soil temperature. Nutritionally, a regular supply of well-decomposed compost or diluted organic fertilizer (every 15 to 20 days) supports leaf growth without exceeding it. Shallow hoeing every two to three weeks aerates the soil and facilitates root absorption while controlling weeds. Regular pinching of the tips (young terminal stems) as soon as the plant reaches 15 to 20 cm encourages a bushy and branched habit, thus multiplying harvest points. Maintaining an adequate spacing between plants ensures sufficient air circulation and reduces the risk of rot.

Health protection and environmental balance

Regular health monitoring is essential: watch for leaf spots, deformations, or the presence of small insects (aphids, spider mites). Basil fears excess moisture and temperatures below 10 °C; a sunny position (6 to 8 hours minimum) and good natural ventilation effectively prevent fungal diseases. In organic cultivation, prioritize prevention: quickly remove diseased leaves, avoid watering the foliage, and regularly aerate the space between plants. In the face of garden pests, an initial intervention threshold can be a simple rinse with water or the use of gentle solutions (black soap, plant macerations). Annual crop rotation and wise association with other herbs or vegetables limit soil exhaustion and reduce the accumulation of pathogens in your ecological garden.

Key Points

Soil type: Light, draining soil, neutral pH 6.5-7.5, rich in organic matter
Maintenance: Gentle hoeing every 10 days, remove flowers, monthly organic compost
Watering: After plant recovery, 2-3×/week, soil moist but not waterlogged
Preventive action: Mulching 5-8 cm, black soap spraying, annual crop rotation

Harvest Time and Conditions for Genovese Basil

The harvest of Genovese basil begins approximately 6 to 8 weeks after planting, as soon as the plant reaches a sufficient maturity characterized by the appearance of 6 to 8 true leaves and a compact, vigorous growth habit. Visual indicators of maturity include fleshy, deep green leaves, with no signs of water stress. To preserve the optimal quality of fresh fruits and vegetables from your vegetable garden, it is recommended to harvest in the late morning, after the dew has disappeared, when leaf moisture decreases and the temperature reaches 18 to 20 °C. Regular picking every 7 to 10 days, removing flower buds before they fully bloom, encourages branching and extends the productive cycle. This harvest frequency allows for an average yield of 1 to 1.5 kg of fresh leaves per plant in organic cultivation, while maintaining excellent plant vitality.

Harvesting Methods and Post-Harvest Storage

The harvesting of Genovese basil is done manually or with a small sharp knife, gently pinching the leaves or stems to avoid oxidation and tissue injuries. Gentle and quick handling is essential to preserve cellular integrity and freshness. After harvesting, proceed with careful sorting, removing damaged or yellow leaves, and apply good hygiene practices by lightly cleaning with a damp cloth if necessary. Pre-cooling is not essential for this crop, but rapid storage in a cold room at 2 to 4 °C and 85% relative humidity extends storage up to 5 to 7 days. For short transport to the market or table, prefer ventilated containers and maintain a low ambient temperature to preserve the sensory and nutritional quality of the fresh product.

Key Points

Period: 6-8 weeks after planting, from June to September
Stage: 4-6 true leaves, green and fleshy leaves, before flowering
Method: Disinfected pruner, clean cut of the tops at 45°
Storage: 10-12°C, 85-90% humidity, maximum 7-10 days

Taste Profile and Culinary Preparation of Genovese Basil

Genovese basil is distinguished by its tender and fragrant leaves, which are the part exclusively consumed in home cooking. Its taste profile reveals a fresh and slightly peppery flavor, with subtle notes of anise and clove, offering a soft and delicate texture. In the kitchen, this aromatic vegetable from the garden is best enjoyed raw, where its sensory qualities are fully expressed: in pesto, shredded over pasta, integrated into fresh salads, or sprinkled over Mediterranean dishes. It can also withstand a very short cooking time — just a few seconds in a wok or added at the end of preparation — to preserve its volatile essence. Genovese basil naturally pairs with tomatoes, garlic, olive oil, fresh cheese, and plant proteins, forming an essential aromatic base of Mediterranean cuisine.

Seasoning, Nutrition, and Storage of Fresh Basil

To enhance Genovese basil, opt for a quality olive oil, fresh lemon juice, or a light white vinegar. Rich in vitamins C and K, minerals, and antioxidants, it contributes to the nutritional intake of a healthy and garden-inspired cuisine. The leaves can be consumed without particular restriction, although their intense flavor recommends measured use. For short-term storage, keep basil in the refrigerator, ideally in a glass of water covered with film, for 5 to 7 days. Freezing in portions or previously blended into pesto offers a long-term storage of several months. Drying significantly slows down the aromatic profile; therefore, prefer freezing or lacto-fermentation to preserve the fresh character of this home cooking herb.