Can cannabis seeds be grown all year round? Yes, cannabis seeds – including the best feminized and autoflower marijuana seeds, of course – are for all seasons. They can potentially be grown year-round indoors, where temperature, light, and humidity can be controlled. Should you wish to grow them outdoors, it depends upon the climate and daylight.
If you want to grow them during winter, you can. If you want to cultivate them during the summer, you can, too. However, growing cannabis seeds successfully depends on seasonal conditions. Some of the factors that influence the germination and plant development are temperature, daylight hours, humidity, and rainfall. Growing them outdoors requires careful timing. Here’s everything you need to know.
Spring: Germination Before The Last Frost, Then Moving Them Outside
Growing cannabis seeds during spring requires germinating them indoors for up to four weeks before the last frost, as you move them outdoors when temperatures stabilize. The steps are as follows:
Germinating The Seeds
First, you need a warm and dark setup. Make use of the Paper Towel Methods by putting the seeds in-between damp paper towels in an unsealed plastic bag, or on a plate. Keep your seeds warm in a dark location between 70 degrees Fahrenheit and 85 degrees Fahrenheit. Then, wait for the taproot. Do a daily check for up to 4 days until a small white taproot emerges.
Planting The Seedlings
In this step, begin by planting the germinated seed around half-an-inch deep in a light, well-draining seedling potting mix with the taproot pointing downwards. Then, you must also be able to control moisture. Water gently.
This is followed by providing lighting. Give your seedlings 18 hours of light daily using gentle LED, or fluorescent grow lights placed within a safe distance away.
Transitioning To Outdoor Spring Winter
Eventually, you will need to move the plants outdoors. Then, acclimate those indoor seedlings to natural sunlight while winding them gradually for 10 days. In other words, place them outdoors for a few hours at a time before permanently leaving them out. The last step is placing them within containers.
Summer: Starting The Seeds Indoors Against Extreme Heat And Direct Sun
Summer offers a lot of sunlight, but that does not mean these cannabis seeds should be exposed to it. As a matter of fact, during summer, everything starts indoors to protect the delicate sprouts from extreme heat and direct sunlight.
Germination And Early Seedling
The Paper Towel Method also works here, as you keep temperatures up to around 80 degrees Fahrenheit only. They should also be kept moist to retain moisture until the taproot kicks in.
Then, plant the germinated seed around ¼- to ½-inch deep within a small pot with light, well-draining soil. The seedlings should be indoors for the first two weeks, especially since it’s the summer season.
Summer Heat And Light Management
Prior to moving the plants outdoors to get full summer sun, first expose them to the outdoor environment for a few hours each day over several days, moving them out and then back in.
During peak summer heat, use shade cloth or transfer the potted plants to an area that receives morning sun and afternoon shade to avoid heat stress and dry soil. You must also watch the light cycle.
Watering + Soil Care
Greet those plants early in the morning with water so the roots can absorb moisture before high-afternoon evaporation rates occur. You must also improve the drainage every now and then.
Fall: Fast-Finishing Autoflowering Strains Indoors
During the autumn season, growing cannabis seeds mostly happens indoors, and the best picks are fast-finishing autoflowering strains. Dropping temperatures can halt growth.
The Indoor Setup
In summary, this step is all about controlling climate, warming the roots, managing humidity, and providing lighting. First, keep air temperatures up to 78 degrees Fahrenheit when lights are turned on, and above 65 degrees Fahrenheit when off. Then, use a thermostat-controlled seedling heat map to maintain root-zone temperatures.
Managing humidity is also part of the process, setting this to 80 percent for the first two weeks. Lighting should not be forgotten.
Planting And Germination Steps
Those above are the indoor setup, how about the planting and germination? Of course, germination starts first. You may also use the Paper Towel Method here.
During fall, seeds must be sown at the correct depth. Poke a hole around ½-inch deep in a high-porosity potting mix or high-quality bagged soil.
Also, the root must be oriented by placing the seed into the soil with the white taproot pointing straight down, then lightly covering it without soil compacting. Finally, water carefully.
Winter: Everything Happens Indoors
Winter is also an ideal time to grow cannabis seeds, but everything happens indoors. The indoor setup involves a controlled grow room or tent with stable temperatures between 70 degrees and 80 degrees Fahrenheit.
The Setup Indoors With Temperature Controls
The cold winter weather may slow growth when doing it the wrong say, so keep the ambient temperatures stable with the use of a digital thermostat and space heater.
Be sure to manage lighting by using traditional HID or High-Intensity Discharge lights like HPS or Metal Halide, since their heat can fight the winter chill. Then, optimize the light cycles so the lights run during the coldest night hours to naturally keep the space warm and save on energy expenditures. Don’t forget to elevate the plants, as the secret to growing them well also lies here.
Germination And Humidity
So the Paper Towel Method works all year round here, as this is also required when growing cannabis seeds during winter. Control the moisture by using a hygrometer to keep the relative humidity up to 60 percent only, and to avoid mold.
Lastly, water carefully. Cannabis seedlings transpire less in cold weather, as the soil retains the moisture longer. So, avoid overwatering to keep root rot at bay.
By following those steps, you can grow your cannabis seeds in whichever season in the right way. Growing cannabis successfully across seasons requires matching planting decisions with changing light, temperature, moisture, and climate conditions. Understanding these seasonal patterns helps you anticipate challenges, protect their health, and improve the consistency of the planting.
