A detailed lunar gardening calendar for September 2025

What to do at the beginning of the month

The gardener's lunar calendar for September 2025 will advise on the best time to harvest fruit trees and berry bushes, as well as how to prepare your garden plants for the upcoming winter. Gardeners who tend to their vegetables will benefit from the lunar calendar's guidance.

According to experts studying the effects of the moon phases on plants, it is better to refrain from carrying out any work related to the earth on the days of the new moon and full moon (September 9 and 25).

PThe first ten days of September are in the waning moon, so planting is not recommended during this period. The waning moon pulls plants downward, resulting in very poor and low-quality seedlings.An exception is the planting of winter garlic, onions, radishes and horseradish.

The waning moon promotes the drainage of cellular sap from the root system. Harvested potatoes, carrots, beets, radishes, and other vegetables will keep for a long time. However, avoid digging up vegetables during rainy and damp weather. Soaked tubers may begin to rot, resulting in a lost harvest.

On September 10–11, you can begin harvesting late-ripening cabbage and other long-storage vegetables. Don't forget to remove any remaining vegetation, dig over, and mulch the beds.

Video: "Gardening in September"

This video will tell you what a gardener should do in early September.

Recommendations for mid-September

In mid-September, the moon is in its waxing phase. Winter garlic, sorrel, carrots, beets, and greens will produce good sprouts. The middle of the first month of autumn is the optimal time for planting vegetable seeds and greens indoors: tomatoes, bell peppers, cucumbers, celery, onions, beets, spinach, parsley, spring onions, chives, and others.

Following the lunar calendar recommendations for September 2025, it's time to fertilize your garden plants with organic fertilizers in mid-month. Mushroom gardeners should begin sowing spores in a nutrient-rich medium enriched with beneficial micronutrients, transferring the mycelium to a substrate, and covering the substrate with cover soil.

Guided by the lunar calendar, in mid-September gardeners collect and prepare the roots of medicinal plants for further use as intended.

How to end the month

The last ten days of the month will begin with an unfavorable period for gardening: September 20, 21, and 22 are considered barren days. According to experts, it's best to avoid sowing seeds, transplanting vegetables and fruit crops, or applying fertilizers on these days. To spend this time productively, you can treat your garden beds to eliminate harmful insects and their larvae, which often hide in the plant tops. Don't forget to pay attention to your cabbage beds.

In the last weeks of September, begin harvesting the vegetable garden. The collected plant debris should be burned or composted to produce organic fertilizer. Any pest larvae that may have remained on the tops will be destroyed. Leaving the tops in the garden poses a high risk of infestation by harmful insects, which will emerge with the arrival of spring and destroy the first shoots of vegetable crops.

You can finish the month by preparing the garden for future plantings, marking out planting areas, planning plantings, and forming beds. It is recommended to fertilize the soil under late-bearing crops with mineral fertilizers. However, during this period, only dry fertilizers are allowed.

September 25 and 26 are considered favorable days for cultivating the soil in areas of the garden free from crops: removing weeds, loosening, partially or completely replacing the top layer of soil, digging and simultaneously applying organic fertilizers.

Signs and traditions of September

Many gardeners and horticulturists are accustomed to relying not only on the lunar sowing calendar compiled by experts for each month of 2025, but also on various folk omens.

So, there are many different signs and traditions for September, thanks to which it is possible to predict the weather for the next few weeks, as well as be prepared for weather surprises in winter and spring:

1. September thunder predicts a warm autumn and the opportunity to leisurely finish harvesting in the garden and vegetable beds.
2. If the trees and shrubs growing in your garden are heavily covered in cobwebs, there's no need to rush into preparing for winter, as warm and fine weather will persist for several more weeks.
3. A warm south wind on the day of the holy martyrs Thekla, Agapius and Timothy, which falls on September 1, promises a bountiful oat harvest next year.
4. Traditionally, work was strictly forbidden on Michaelmas Day. Going out into the garden or vegetable patch to work was considered a sin. Frost on the plants on this day was a harbinger of a cold and harsh winter.
5. Morning frosts on the day of the holy martyr Luppus of Thessaloniki (September 5) foretell early cold weather and frosts, so it is necessary to hurry with harvesting and preparing the garden plot for winter.
6. If winter crops have produced strong shoots, you can prepare for a good wheat harvest next year.

Most folk beliefs and traditions were developed by our ancestors, who skillfully used nature's "hints" when planning and organizing gardening. However, modern gardeners, striving to achieve high yields from their fruit and vegetable crops, apply the experience of their predecessors in practice.