How to Flower Cannabis


Growing a weed plant is pretty simple when you have the right tools and environment for your plant. You can even grow one in your closet and it involves very minimal setup, time and work. But flowering is the tricky part because there are often problems that occur in this stage that may impact the growth of your cannabis plant. But once you’ve learned the tricks to flower cannabis, you will have top quality weed in no time to pack in your pipes.

Mostly, you would just have to make some changes to your light cycle. After the flowering, you can start harvesting.

Flowering Phase for Cannabis

Let’s take a closer look at this delicate phase of growing your very own cannabis. At this point, your plant is fully grown and it’s coming to the end of its growth cycle. This is when the plant will start flowering and after that, it’s harvesting time.

The first 3 weeks of this phase are the growth phase. After the plant has initiated flowering, they will start growing explosively. During this stage, you need to change your lighting schedule to 12 hours light and 12 hours darkness, from your previous 24 hours one. If done properly, your plant can easily double or even triple in size. You will see how your little plant will be quickly transformed into a giant. Its buds will keep swelling and the crystals will start to form. By then, the scent will develop and become stronger. Then, you just have to wait until you can enjoy your first joint from your harvest.

The concept behind changing the lighting schedule to a shorter one is to let your plants know that the days are getting shorter and it’s time to flower. It works because the environment you set mimics the natural environment where they originally grew. When fall comes and the days become shorter, that is when they naturally flower and blossom. Shortening your lighting schedule will trigger the plants to bud. So, if you’re growing your cannabis indoors, it’s important to change your schedule from 24-hour or 18-hour lighting to 12-hour increments.

Your marijuana plant’s nutrient cycle will also have to change and if you’re growing on a soil, you would have to use a fertilizer that will help them at this stage.

Important Things to Do to Flower Cannabis

When your plants reach the flowering stage, you would have to make some extra effort to take care of them and remember to do these crucial steps to ensure that the flowering will not be impeded.

  • Grow and Bloom Fertilizer

    If you’re already using a fertilizer, you would have to switch to a different type to flower cannabis. It’s called a bloom fertilizer. However, growers usually continue to give grow fertilizer to the plants during the first or second week of flowering. This is the transition period where your cannabis plants will need building blocks to grow quickly. Doing this will make the plants grow taller. This is if you prefer taller cannabis plants. Making changes to your fertilizer will allow you to control the size of your plant when you flower cannabis. If you don’t want your plants to increase more in size, you can immediately switch to bloom fertilizer and cut off the grow fertilizer on the first week of the flowering phase. Otherwise, if your plants are still small, you can continue giving the grow fertilizer.

  • Blooming Period

    When your cannabis plants are in full bloom, after a period of three weeks, they will achieve their maximum size. They will stop growing but will start forming buds. During this stage, it’s very important that you continue to administer blooming fertilizer because your plants need more phosphorous and potassium. They are important building blocks to help your plants form good buds. This fertilizer stimulates the flowering and fruiting of your marijuana plant.

    Check the bottle to see how much you have to administer and make sure that you don’t give too much because you could over fertilize them. The way your plants will bloom may vary depending on the strain. Observe your plants closely to determine what they need.

  • Foliar Feeding

    This step may not be necessary if you’re doing an excellent job at fertilizing. However, it is very hard to perfect so most of the time, you may need to do this step. The plants may lack something so it’s good to administer foliar feeding to your cannabis. They will rapidly absorb the nutrients and this will help make up for any nutritional deficiencies. Another advantage of foliar feeding is that you minimize the risk of over fertilizing.

    When growing your plant indoors, the best time to do foliar feeding to flower cannabis is half an hour before the lights go on. Do not give foliar feeding right before you turn on the lamps because the light will be too strong and when the plants are still wet, it could burn their leaves. But for those who are growing outdoors, it’s best to administer foliar feeding early in the day. To administer foliar feeding, spray it on top of the leaves of the plant once or twice a week. Remember to continue to keep a close watch of your plants to see which nutrients they need.

  • Top or Tie Down

    You have a limited growing space, it is necessary to top or bind your cannabis plants to flower cannabis. The topping is when you remove the top of the plant so that you get two main tops instead of one. This way, the plant will have more yield.

    Bind your cannabis plant by pulling the biggest bud down and then bind it with a bit of tension. This will have the same effect as the topping.

  • Ventilation

    To effectively flower cannabis, the plants need sufficient CO2 or carbon dioxide. The more they get, the faster the plants will develop. You can use fans or if your space allows it, make holes in the ground to let air in.

After following the crucial steps to flower cannabis, your plant will enter the budding stage. Now you just wait to harvest.