What is a cannabis moon calendar and how is it used?

Nature does not improvise but responds to cycles, rhythms, and patterns that, when understood and respected, can make a great difference in the yield of any crop. And, without any doubt, one of the oldest and most effective allies of traditional agriculture is the moon. That’s why Kannabia has developed its own 2025 cannabis growing calendar, a free tool specially designed for those who want to optimise their grow through the strategic planning of key activities according to the lunar cycles. Let’s have a look at what this is and how to use it!

A moon calendar is a tool that suggests the best times to perform various gardening tasks (in this case specific to cannabis growing) based on the phases of the moon. This practice has deep historical roots that go back thousands of years. Although nowadays scientific evidence is limited and sometimes controversial, this option remains popular among modern growers who report better results by aligning with the lunar cycles, adding an element of tradition and experimentation to this practice.

Because far from being a simple superstition, this calendar is based on an ancestral premise: Just as it influences the tides, the moon affects the sap of plants, the moisture of the soil, and the energy flows of nature. The gravitational force of the moon, for instance, drives the sap in different directions within the plant. And although moonlight doesn’t have enough intensity to activate photosynthesis, it does regulate part of the photoperiod of plants by stimulating the production of photoreceptor proteins, which directly affects the growth and development cycles of cannabis.

Biodynamic agriculture and other organic farming systems have defended the effectiveness of this technique for decades. Although it may seem esoteric at first glance, more and more cannabis growers are obtaining better results when they plan their tasks according to the phases of the moon.

The four phases of the moon and their impact on cannabis

To fully understand how to use our moon calendar, it is essential to know the four main phases of the lunar cycle and how each affects your cannabis plants. Imagine the moon as an orchestra conductor, guiding the rhythm of the tides and, more subtly, the water within plants, like musicians responding to its baton.

● New moon: The moon isn’t visible so it’s a moment of rest. Sap flow is lower, and it is mainly concentrated in the roots. This phase is ideal for planning or for tasks that could cause stress, such as pruning or the removal of withered leaves.

◐ Waxing moon: As the moon grows, it is associated with growth and expansion, and the sap tends to rise. This favours the development of the aerial parts of the plant: leaves, stems, and branches. It is a good time to germinate, transplant, or apply foliar fertilisers.

○ Full moon: The moon is fully illuminated, marking a moment of maximum energy and activity. The plants are more receptive but also more sensitive. It is best to avoid pruning or drastic cuts.

◑ Waning moon: As the moon wanes, it’s time to rest while the sap descends to the roots. Ideal for tasks that require less stress, such as harvesting, fertilising, or treatments with pesticides and fungicides.

How to interpret Kannabia’s growing calendar

Our 2025 lunar calendar for cannabis cultivation has been designed for both the northern and southern hemispheres, taking into consideration the particularities of cannabis and optimising each activity according to the influence of the moon. It also identifies the most favourable days for seven key activities: germination, transplanting, application of insecticides, application of fungicides, taking of cuttings, pruning, and harvesting.

But to get the most out of our moon calendar, it’s important to first understand how it is structured:

1. Each month shows the days of the week numbered in columns to facilitate your planning.
   
2. Growing activities (germination, transplanting, etc.) are listed in rows.
   
3. The days recommended for each activity are marked with a dot, whereas the days to avoid doing them are marked with an X.
   
4. The phases of the moon (new, waxing, full, and waning) are indicated with specific symbols at the top, right on the day when that lunar phase begins.

Step-by-step guide on how to use Kannabia’s moon calendar

As you can see, our calendar is really easy to view and has been designed to guide you month by month. Here are the detailed steps to use it:

1. Identify the month: Open the calendar and select the month you’re in.
   
2. Locate tasks: Are you going to germinate seeds? Do you want to take cuttings? Do you have to transplant your seedlings? Is it time to harvest? The first thing you need to be clear about is what activity you need to do.
   
3. Check the dates: Make a note of the specific recommended dates for each task, which will be aligned with the phases of the moon. For example, germination should be close to the new moon phase, while harvest time should be close to the full moon phase.
   
4. Plan your tasks: Adjust your growing activities so you can perform them on the recommended dates. Remember that the phases of the moon are universal, but make adjustments according to your time zone if necessary.

Benefits of using Kannabia’s growing calendar

Many experienced growers have reported outstanding results when synchronising their growing activities with the lunar cycles. This is a direct consequence of working in harmony with the natural cycles that affect all plants, including cannabis:

• Increase in germination rates of up to 25%.
• Faster recovery after transplanting and pruning.
• More effective preventive treatments.
• Increase in resin production and potency.
• Better flavour and aroma profile in the final product.

Top tips to maximise the benefits of Kannabia’s moon calendar

A great resource for optimizing cultivation

Lunar-guided cannabis cultivation represents a fascinating convergence of ancient wisdom and modern agriculture—a blend of tradition, observation, and personal experimentation. Our 2025 growing calendar has been specifically designed to help you harness this cosmic influence.

However, it’s important to remember that this calendar is a complementary tool to good growing practices. Factors like genetics, growing environment, nutrition, and overall care remain fundamental to success.

At Kannabia, we take pride not only in offering the highest-quality cannabis genetics but also in providing growers with the tools and knowledge needed to achieve extraordinary results. Our lunar calendar reflects this commitment to excellence and mindful cultivation—so we invite you to download it and experiment with the cycles set by our favorite celestial body.