How To Choose Seeds For Growing Weed


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Knowing how to grow high-quality cannabis is a treasured skill. Our growing marijuana 101 guide can help you. Learn how to grow a marijuana with us. Read more to understand which cannabis seeds suit you the best and why. We help you find the best cannabis seeds for you whether you are growing cannabis indoors or outdoors, with feminized or autoflower seeds

How To Grow High Quality Plants

Are you in one of the many states that has legalized cannabis? If yes, then you may have found yourself with a new crop to plant in the garden this summer. Growing a new crop can be challenging even for veteran gardeners, but with a little help from your friends at Impello you can avoid some of the common mistakes that lead to a poor crop.

Pick Reliable Cannabis Seed Banks

When purchasing cannabis seeds, you might often choose the cheapest ones to save some bucks. However, the quality may be compromised, and you’ll end up spending more than you have to. That’s why you should pick cannabis seeds with the best genetics. Conduct your research so that you can buy from trusted cannabis seed banks. Cloning can be a good start too — just make sure to get the clones from reputable sources.

Provide Enough Lighting

One essential element for growing cannabis is proper lighting. It’s not only the quality that will be affected but also the speed and size. While marijuana grown outdoors gets natural light, indoor cannabis needs extra care. This means that your usual lightbulbs are not enough to make up for the absence of lights.

Invest in more premium lights, hoods, and reflectors. Get high-intensity (HID) lights, like high-pressure sodium (HPS) or T5 fluorescent lights. You can also use LEDs to save on energy costs. Just make sure to choose full-spectrum LED lights that allow you to modify the wavelength based on the marijuana plant’s needs as it grows.

Enhance Water Quality

Dissolved solids from water can cause adverse effects on your marijuana plant. For instance, domestic water contains chlorine and fluoride. While they will not kill the plant, maximum yield can’t be expected. So, consider using a reverse osmosis system or filtration. Make sure to change the filters regularly. It’s also best to test the water from time to time to check whether the parts per million (PPM) of dissolved solids remain the same.

Secure Enough Spacing and Ventilation

Wondering how to grow high-quality marijuana? Allow enough spacing between the cannabis buds. Make sure no leaves or branches block the airflow. You can apply low stress training (LST) where you tie the plants down while they’re still young to ensure that the light is well-dispersed, improving the plant’s overall health. Using other tools like filters and fans will also help you maintain the airflow.

Provide Sufficient Amount of Nutrients

One of the 10 steps to growing weed is providing just the right amount of nutrients per growth stage.

Tribus Original is the perfect seedling to harvest cannabis growing products on the market today and it’s very versatile. Usage rates are 1 ml per gallon and with a price tag under $60 for a 250 ml bottle, and a little goes a long way. Because it consists of beneficial bacteria you really can’t overfeed your cannabis plants with it, and it creates stronger plants from the inside out. For best results apply it to your grow media at least once a week. Tribus is compatible with all grow media, including hydroponics and even field application.

In addition to Tribus, these nutrients are necessary when feeding cannabis plants.

Nitrogen, potassium, and phosphorus may be the three main nutrients that your cannabis plants need. However, they also need other nutrients like:

During the flowering stage, various supplements can be beneficial too. These include:

Prune Cannabis Properly

While low stress training does not involve cutting, you have to perform pruning to promote yield increase in plants. It also helps you get rid of buds that are not in their best condition. This way, buds become fewer but larger and healthier. Consider removing the lowest branches to ward off pests. To ensure that the plants recover and grow faster, prune during the vegetation stage.

See also  Scotts Weed And Seed

Keep the Right Room Temperature and Humidity

Cannabis can grow well under several conditions, but you need to ensure that the room’s temperature and humidity satisfy the weed’s needs. Even small changes can affect its growth, so focus on the temperature and humidity in each stage.

Seedling Stage

For seedlings and clones, the preferred humidity levels range from 65% to 80%. This way, they can take up enough water and have stronger roots. In terms of temperature, keep it at 25 degrees Celsius or 77 degrees Fahrenheit during the day and 21 degrees Celsius or 70 degrees Fahrenheit during the night.

Vegetative Stage

In the vegetative stage, moderate humidity levels are necessary. Every week, you can decrease it by 5%. Around 40% to 70% will work. Given that the roots are stronger during this period, they can absorb more water, so lowered humidity levels are preferred. For the temperature, you can raise it a bit — around 71 to 82 degrees Fahrenheit during the day and around 64 degrees Fahrenheit to 75 degrees Fahrenheit at night.

Flowering Stage

Reducing the humidity levels to 40% to 50% is needed during the flowering stage. You can make it 55% but never 60%. Also, the temperature can decrease to 68 to 78 degrees Fahrenheit. Then, in the latter part of the flowering period or one to two weeks prior to harvest, reduce humidity levels from 30% to 40%.

Meanwhile, the temperature can fall between 64 to 75 degrees Fahrenheit or 18 to 24 degrees Celsius with lights on and 16 to 20 degrees Celsius for several nights before harvest. To monitor the humidity and temperature, use a hygrometer and thermometer.

Lowering Temperature

If you aim to lower the temperature, you can do the following:

  • During the day, keep the lights off; during the night, on.
  • Add an air conditioning unit. This can also help reduce humidity.
  • Use a cool tube if you are growing marijuana with HPS lights.

Increasing Temperature

To raise the temperature, you can:

  • Utilize a quality space heater with a thermostat.
  • Use grow lights with higher watts.
  • At the bottom of your grow room or tent, place a heating mat.

Lowering Humidity

If you want to drop the humidity levels, perform these steps:

  • Water your marijuana plants immediately after switching on the lights. Given the quick absorption, humidity levels will decrease.
  • Get a humidifier.
  • Have an airflow fan upgrade to increase the supply of cool air.

Increasing Humidity

Enhancing humidity levels can be possible through the following:

  • Use a humidifier that has enough water reservoir to avoid frequent refills.
  • Using a spray bottle, mist your marijuana plants. However, this shouldn’t be done to flowering plants as it can result in bud rot.
  • Bring larger plants inside the room. Compared to seedlings, they perspire more, raising the humidity levels in the grow room.
  • Consider hanging wet towels inside your grow room.

Maintain Enough CO2

Did you know that providing your marijuana plants with sufficient carbon dioxide (CO2) helps improve their growth by 20%? CO2 is crucial in photosynthesis, where cannabis absorbs light and turns it into energy. Excessive CO2 or a lack of it can be detrimental to your cannabis plants. So, you should know how to provide them with the right CO2 levels. Ideally, it should be above 250 PPM.

To supplement your plants with extra CO2, you can use the following:

    • CO2 generator: To produce carbon dioxide, the CO2 generator burns natural gas or propane. It automatically turns on or off if a certain CO2 level is reached. However, burning the gasses can create heat. So, it’s advisable to use one in a larger grow room.
    • Compressed CO2: With this option, the manufacturer produces the gas and compresses it into a tank. No heat is produced once gasses are released, so you won’t have issues with the temperature and humidity levels. It can also be set to automatic using a controller. Note, however, that both CO2 generators and compressed CO2 can be relatively costly.

    Know When To Harvest the Cannabis Plants

    Harvest time keeps growers excited, especially given all the efforts exerted to produce healthy and quality buds. However, cutting them too soon will defeat the purpose and waste all your hard work as the tetrahydrocannabinol (THC) content will be low. So, harvest them at the right time based on the following indications:

    Dry and Cure Cannabis Properly

    You may think you’re done once you harvest your cannabis. However, drying and curing are important steps to producing quality and tasty buds. First, drying helps reduce the bud’s moisture content to 15%. It also enables you to maintain its taste and the natural compounds in it, including THC. To dry cannabis properly, follow these steps:

    1. Cut down your cannabis plants. While most growers prefer to cut off the branches, some want to cut until the base and hang them upside down. Others will also cut off each bud and then place them on a drying rack.
    2. Trim to remove larger fan leaves. Doing so will contribute to your buds’ improved look. If you’re residing in a place with less than 30% humidity levels, trim fewer leaves.
    3. Begin the slow drying process. A temperature of 65 to 75 degrees Fahrenheit and 50% humidity is preferred. If it exceeds 80 degrees, the terpene content will go away. While hanging the buds upside down is the most common method, you can use a drying rack or cardboard to lay them out. Generally, you need three to seven days to dry the buds well.

    After the drying process, you can now proceed to curing to preserve the plant’s cannabinoids or compounds and terpenes. Simply perform the following:

    1. Put the cannabis buds into mason jars with a wide opening. Other alternatives include plastic or wooden vessels.
    2. Secure the container in a dark and dry area. Humidity levels should range from 60% to 65%.
    3. Check the containers regularly. Open them at least once a day for two weeks. Doing so will remove extra moisture and accommodate fresh air.

    While your cannabis should be ready for use in two to three weeks, keeping it for around two months is recommended for maximum results. Commercial grow operations may prefer to use chemicals to hasten production. However, the whole experience of users may be compromised.


    There are multiple factors to consider when growing cannabis on your own. However, growing cannabis indoors step by step with our guide above will help you produce quality buds that you’re proud of.

    How to choose the best cannabis seeds

    Choosing the best cannabis seeds can be confusing because there are so many to choose from. As well as the established seed companies there are lots of small, new seed banks. The choice can be overwhelming and it can be difficult to know where to start. Before you can decide on the best cannabis seeds, you first need to ask yourself a few questions about your own growing and smoking/vaping preferences

    Feminized photoperiod seeds or autoflower seeds.

    These days the market for cannabis seeds is dominated by two main categories. Photoperiod feminized seeds and autoflower seeds . Autoflower seeds grow from seed to harvest in around 10-11 weeks indoors using a 20/4 light schedule. That means 20 hours of light followed by 4 hours of darkness. Some seeds, including the Dutch Passion autoflower varieties, can also be grown under 24 hour light from seed to harvest. Photoperiod feminized seeds have to be forced into bloom by reducing light to 12/12. This means they need 12 hours of light followed by 12 hours of darkness in order to bloom, and the bloom process usually takes around 8-10 weeks. You can expect great potency levels from good quality seeds whether they are autoflowering seeds or traditional photoperiod feminized. These days most of the autoflower seeds are feminized rather than regular.

    Regular seeds or feminized seeds.

    Typically around 97% of seeds are feminized seeds , that means that they will grow into mature female cannabis plants. Regular seeds will give rise to male and female plants in roughly equal numbers. Feminized seeds were first created in the 1990’s by Dutch Passion and have become the most popular way to grow cannabis. Regular seeds are still used by breeders and some old-school growers, but most growers don’t want to use their space, nutrients and electricity to grow unwanted male plants. For that reason regular cannabis seeds have become less popular over the years. However, Dutch Passion still maintain one of the largest collections of regular seeds with around 15 varieties available as regular seeds. Many seed companies don’t offer any regular seeds, and only sell feminized seeds. There are no differences in quality or potency between feminized and photoperiod seeds.

    Indoor cannabis seeds or outdoor cannabis seeds.

    In many countries, especially those with cool climates, people prefer to grow cannabis indoors. This is a cheap and easy way to grow cannabis, you can buy the grow tent, extraction fan, carbon filter and lights easily from your local grow shop or online. A budget grow room can be set up for a couple of hundred euros, and you can save even more money by buying some of your equipment second hand. Growers in warm countries often prefer to grow their cannabis outdoors, on their terrace, their garden or in the local countryside. The following blog gives useful information about growing cannabis easily outdoors . This blog explains how to grow weed easily indoors . The Dutch Passion outdoor seed collection features some varieties that have been selectively bred for growth outdoors in Dutch-style climates.

    THC rich or CBD rich cannabis seeds.

    Most varieties of cannabis are rich in THC, THC gives the psychoactive high that is so popular with recreational and medical cannabis users. THC ensures a pleasurable cerebral experience, but it also delivers valuable medical benefits for medical cannabis growers. In recent years new varieties have been created are are also rich in CBD. CBD is especially valued by medical growers who find it can be helpful with symptoms of some illnesses, such as MS, Crohns disease and some chronic pain issues. CBD rich varieties can offer a smoother, more enjoyable high, sometimes with a less intense psycho active effect and an improved body stone. But many recreational cannabis growers are also starting to notice that CBD rich varieties give them a superior, more rounded smoking experience. CBD rich varieties also tend to have higher levels of some of the other minor cannabinoids such as THCV, CBG etc. For many home growers, the wider the cannabinoid spectrum, the better the final smoke/vape.

    Choosing the best cannabis seed company.

    Find a cannabis seed company that you have confidence in. These days it’s easy to google a seed variety to find grow reviews. Many of the larger seed companies will be present on the grow forums and should have plenty of strain reviews on the internet. Dutch Passion have hundreds of grow reviews in the blog section of the website, it’s searchable and you can see the results that can be achieved with the best genetics.

    Cheap cannabis seeds or expensive seeds.

    The most expensive cannabis seeds are not necessarily the best. Focus your research on the seed variety that you think will suit you best. Don’t worry too much about the price, your time is better spent looking for grow reviews on the best performing genetics. At the same time, don’t try to cut corners on seed pricing, the cost of your seeds is one of the less expensive parts of your grow but the genetics have the greatest influence on the final harvest quality.

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