You buy it full of hope, put it on the windowsill, and within ten days it is already half yellow. If you too have a complicated relationship with basil, know that it’s not your fault — or rather, not entirely. This aromatic plant is more demanding than it seems, but knowing its habits is enough to become an expert grower even without a garden.
Basil is a precious ally in the kitchen and beyond: its properties range from its unmistakable scent to its ability to keep mosquitoes away, up to its benefits for skin and hair. It’s worth learning to keep it alive — and make it thrive.
Here are our 7 updated tips for growing basil in pots in a healthy and luxuriant way, from spring to autumn.
1. The right vase makes all the difference
The basil found in the supermarket or market is almost always crammed into a tiny plastic pot, often with several plants crowded together. That is not a condition he can survive in for long.
The first step, as soon as you get home, is to immediately repot the plant in a larger container – at least 20-25 cm in diameter – preferably terracotta, which regulates humidity better than plastic. If there are multiple seedlings in the original pot, gently separate them and place them in separate pots: basil needs space to develop roots and grow healthily.
2. Watering: neither too much nor too little
The most common mistake? Watering too much, thinking you are doing good. Water stagnation is the main killer of potted basil.
The soil must be moist but never soaked: before watering, check with your finger that the first 2-3 cm of soil are dry. In summer, with the heat, you may need to water every day — preferably in the early morning or at dusk, never in the hottest hours. Always ensure that the pot has good drainage and that excess water can drain freely from the saucer.
For the leaves, a spray vaporizer is ideal: it guarantees superficial hydration without flooding the roots.
3. Light yes, direct sun no
Basil loves light, but not direct sun during the hottest hours of the day. Its leaves are delicate and a few hours of intense exposure are enough to make them turn yellow, brown or even burnt.
The ideal place is a windowsill or balcony that is bright but sheltered from the afternoon sun — east or south-east orientation is perfect. In midsummer, if the balcony is very exposed, consider moving the pot to a more shaded corner during the central hours of the day.
4. Remove the inflorescences (and do it immediately)
When basil begins to produce flowers — those small white or purple tufts at the top of the sprigs — it means the plant is entering the reproductive phase. From that moment, it stops producing new leaves and concentrates all its energy on the seeds.
To keep the plant productive for as long as possible, remove the inflorescences as soon as they appear, using your fingers or a pair of well-sterilized gardening shears. It is a simple gesture that significantly extends the useful life of the plant.
5. Collect leaves the right way
Even harvesting, if done badly, can weaken the plant. The instinct is to grab the nicest, biggest leaves at the bottom — but that’s wrong.
The correct technique is to cut the sprigs from above, just above a pair of leaves, using sterilized scissors. This stimulates the plant to branch and produce new lateral leaves, making it thicker and lusher over time. Never tear individual leaves with your hands: you risk damaging the tissues and opening the way to infections.
6. The right soil (often underestimated)
One aspect that is often overlooked is the quality of the substrate. Basil grows best in light, well-draining soil rich in organic matter. A mix of universal soil and perlite (in a 70/30 proportion) is a good solution to avoid stagnation and ensure aeration for the roots.
Every season, if the plant has been in a pot for some time, consider renewing the soil at least partially: the nutrients run out and the plant begins to suffer. A little organic fertilizing every 3-4 weeks during the growing season can make a difference.
7. Pay attention to temperatures: basil hates the cold
It’s something that many forget: basil is a tropical plant and already suffers below 10°C. In spring, don’t put the plant outside before nighttime temperatures are steadily above that threshold. In autumn, bring it indoors at the first drops in temperature.
If you keep basil indoors during the winter, place it near a very bright window and away from cold drafts or turned on radiators: either extreme will damage it.
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