plant the onions according to the moon

Planting onions according to the moon: a complete guide to successfully growing your bulbs

18/03/2026

Planting onions according to the moon This guide optimizes bulb growth and health. By following the lunar phases, gardeners can better synchronize sowing, transplanting, and watering, promoting rapid germination and an abundant harvest. Understanding the moon's influence on the soil and bulbous plants helps in choosing the best times for each stage. This practical guide details the ideal lunar phases, suitable planting techniques, and care tips for successfully growing onions, respecting the moon's natural rhythm and improving bulb quality and storage.

plant the onions according to the moon

Why plant onions according to the moon

The different phases of the moon

The moon goes through four main phases: new moon, waxing, full moon, and waning. Each phase influences gardening differently. During the new moon, energy is concentrated in the roots, which promotes underground development. The waxing moon stimulates the upward flow of sap, ideal for sowing leafy plants and seedlings. The full moon accentuates overall plant growth, boosting flowering and germination. Finally, the waning moon slows growth, promoting ripening and root development, which is particularly beneficial for bulbous vegetables like onions.

Influence of the moon on vegetable growth

Vegetables react to variations in gravity and light linked to the phases of the moon. Bulbs, such as onions (Allium cepaOnions and onions experience optimal root and leaf development when planted at the right lunar phase. Planting or transplanting during the waxing moon promotes better germination and more vigorous growth. Conversely, the waning moon is ideal for activities like weeding or pruning, which don't stimulate active growth. Understanding these interactions allows you to plan sowing and planting for healthier, more productive onions.

plant the onions according to the moon

When to plant onions according to the moon

The best lunar period for sowing

For optimal germination, it is recommended to sow onions during the waxing moon. This phase promotes sap flow, stimulating the growth of young bulbs and leaves. According to the lunar calendar, it is best to begin sowing when the moon is transitioning from the first quarter to the full moon, avoiding days when the moon is too close to the new phase. Planting at these times maximizes seed vigor and reduces the risk of stunted growth or soil rot.

When to transplant or plant young plants

Young onion plants can be transplanted during a full moon or a waxing moon, when the plant's energy is directed upwards, promoting rapid root development. It is advisable to space the plants approximately 10 to 15 cm apart and plant them at a depth of 2 to 3 cm, depending on the variety. Following the lunar phases for transplanting ensures even bulb development and improves the quality of the harvest.

Techniques for planting onions according to the moon

Soil preparation

Before planting onions, it is essential to prepare well-drained, fertile soil. Loosening the soil to a depth of about 20 cm allows the roots to develop easily. Adding compost or a light organic fertilizer improves the soil structure and provides the necessary nutrients. It is recommended to carry out this preparation during the waning moon, as this phase promotes root development and nutrient stabilization in the soil.

Direct sowing and planting in pots

Direct sowing involves planting onion seeds directly in the soil, at a depth of 1 to 2 cm, spacing them 10 to 15 cm apart in rows. For planting in pots, it is advisable to transplant the seedlings during a waxing moon to stimulate leaf growth and rapid root development. This method allows for better control of humidity and temperature around the plants, thus promoting more even germination and healthy bulb development.

plant the onions according to the moon

Tips for planting onions according to the moon

Watering and fertilization

Watering onions should be regular but moderate, ideally during the waxing moon to stimulate sap flow and bulb growth. Too much water can cause rot, while too little slows development. Applying a light organic fertilizer, rich in potassium and phosphorus, during this phase helps strengthen the roots and improves bulb quality.

Weed control and protection

Weeding is more effective during the waning moon, as plant growth slows and the roots are less stressed. This period is ideal for eliminating weeds without harming the onions. Similarly, preventative treatments against diseases or pests can be carried out at this time, taking care to observe signs of disease such as the rotting or the attacks insects in order to protect crops effectively.

Planting onions according to the moon: when to harvest?

Choosing the right lunar phase for harvesting

Onion harvesting is generally done during the waning moon. During this phase, the sap descends towards the roots, making the bulbs firmer and better suited for storage. Harvesting at this time also reduces the risk of rot and improves the overall quality of the onions.

Drying and preserving bulbs

After harvesting, the onions should be left to air dry for a few days. It is best to place them in a dry, well-ventilated area, away from direct sunlight to prevent the bulbs from deteriorating. Once thoroughly dry, they can be stored in crates or hung in braids to extend their shelf life while preserving their flavor and texture.

Conclusion

Planting onions according to the moon allows you to synchronize your gardening with natural rhythms, promoting better germination, more vigorous growth, and a quality harvest. By respecting the lunar phases for sowing and transplanting, water By properly caring for the plants, we optimize bulb development and storage. Using the lunar calendar is not just a tradition, but a practical method for observing and understanding the needs of onions at each stage of their growth. Experimenting with this approach reveals the benefits for crop health and productivity.

FAQ

When should I plant onions according to the moon for better germination?

It is recommended to sow onions during the waxing moon. This period promotes sap flow and stimulates the growth of young plants. The seeds germinate more quickly and the bulbs develop uniformly.

When to plant shallots and onions according to the moon?

Shallots and onions are best planted during a waning moon, a period favorable to root development. It is advisable to plant on root days of the lunar calendar, which stimulate the growth of bulb vegetables. This gardening method aims to promote strong root development and better plant establishment.

When to plant white onions according to the moon?

White onions are best planted during a waning moon, a period that promotes root development. It is recommended to plant on the root days of the lunar calendar, which are dedicated to bulb vegetables. This period is considered the most favorable for ensuring good establishment and steady growth.

When to plant yellow onions according to the moon?

yellow onions They are best planted during a waning moon, a period favorable to root development. It is advisable to plant on the root days of the lunar calendar, which are associated with bulb vegetables. This practice is believed to promote good root establishment and balanced plant growth.

Why transplant onions according to the phases of the moon?

Transplanting at the right time allows the roots to establish themselves quickly and supports bulb development. Growth is more vigorous, and the plants are less susceptible to stress and disease. This also helps improve the quality and size of the onions.

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Fouad Chakrouf

Phytotherapist, botanist, photographer. Coming from a family of farmers, I have always been passionate about nature.

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