Medicinal plants harvested in July: benefits, consumption methods and precautions

July is considered an ideal time for harvesting medicinal plants, as their active compounds reach peak concentration during this month. Mint, lavender, St John's wort, and thyme are among the plants traditionally used in herbal medicine to support digestion, relaxation, skin health, and respiratory function. Psychonutritionist Gina Tăujan outlined for Digi24.ro the properties of each plant, the correct way to use them, and situations where caution is required.

The specialist emphasises that medicinal plants are not a substitute for doctor-prescribed treatments, but when used correctly and with the guidance of a specialist, they can complement a healthy lifestyle.

Correct harvesting and storage

According to Gina Tăujan, in order to preserve their therapeutic properties, plants should be harvested on sunny days, after the dew has fully evaporated, from clean areas away from busy roads, chemically treated agricultural land, or other sources of pollution. After harvesting, drying should take place in a well-ventilated spot, out of direct sunlight, and storage should be in clean, airtight containers kept in a dry, cool place.

Mint – digestive support

Mint is valued both for its aroma and its effects on the digestive system. The leaves contain menthol, a compound that produces a cooling sensation and can relax the muscles of the digestive tract. Consuming mint is associated with reducing bloating, feelings of fullness, and sluggish digestion; some studies also suggest a possible effect in soothing nausea after heavy meals. Fresh leaves can be used in water, lemonade, salads, sauces, or desserts, with herbal infusion being the most popular option. People with gastro-oesophageal reflux should exercise caution, as mint may worsen symptoms.

Lavender – calming effect

Lavender contains volatile oils in its flowers and has been associated in some studies with reduced stress and improved sleep. Lavender infusion is frequently used in the evening for its relaxing effect, whilst the essential oil is used in aromatherapy. In the kitchen, lavender is added in small quantities to lemonades, teas, honey, biscuits, or cakes to impart a subtle floral fragrance.

St John's wort – the most precautions required

St John's wort has been extensively studied for its role in supporting emotional wellbeing. Standardised extracts may be beneficial in mild forms of depression, but only on a doctor's recommendation. The plant also contains antioxidant and anti-inflammatory compounds. A word of caution, however: St John's wort can reduce the effectiveness of contraceptives, anticoagulants, certain cardiovascular medications, and epilepsy treatments, which is why its use without specialist approval is not recommended.

Calendula – for skin care

Calendula is used primarily externally, in creams and ointments, for its soothing, anti-inflammatory, and antioxidant properties, which are useful for irritations, superficial burns, and dry skin. The flowers contain carotenoids and flavonoids that help protect and regenerate the skin. The infusion can be consumed occasionally, but external use is the most well-documented application.

Thyme – for the respiratory tract

Thyme contains thymol and carvacrol, volatile oils with antimicrobial and antiseptic properties. It is traditionally used to soothe coughs and thin bronchial secretions, typically in the form of an infusion included in cold-season herbal teas. The aromatic leaves are also used in cooking, in meat dishes, vegetable preparations, and sauces.

Chamomile – a traditional European remedy

Although the optimal harvesting period is May to June, in many parts of the country chamomile continues to flower into July. The flowers contain flavonoids with anti-inflammatory, antispasmodic, and calming effects, and are used to relieve digestive discomfort, abdominal cramps, and to aid relaxation before sleep. The tea can be drunk hot or cold. People who are allergic to plants in the Asteraceae family (ragweed, daisies, calendula) should seek medical advice before using it therapeutically.

Natural does not mean risk-free

Gina Tăujan cautions that medicinal plants can complement a balanced lifestyle, but they do not replace a healthy diet, rest, physical activity, or medical treatments. A natural origin does not guarantee the absence of risks: some plants have contraindications, adverse effects, or may interact with medications, which is why their therapeutic use should only be undertaken with the approval of a doctor or specialist.