How to Grow One Cannabis Plant Indoors

Learn how to grow one cannabis plant indoors with this helpful guide. You will need to purchase some supplies and have a little bit of space in your home to get started.

Checkout this video:


One of the most important things to consider when growing cannabis indoors is the location of your grow room. The location of your grow room will determine how much light, noise, and smell your plants will be exposed to. It is important to find a location that is out of the way and has good ventilation.

Pick a sunny spot in your house

When you’re growing one cannabis plant indoors, picking the right location is important. You need to find a spot in your house that gets a lot of sun. If you don’t have a lot of sunlight in your house, you can buy grow lights to simulate sunlight.

Choose a spot in your house that gets at least six hours of sunlight a day. If you can, pick a spot that gets even more sunlight than that. The more sunlight your plant gets, the better it will grow.

If you can’t find a sunny spot, get a grow light

Sunlight is the best, but if you can’t find a sunny spot, get a grow light. Look for one that emits both red and blue wavelengths of light, as these stimulate plant growth. You can find grow lights at hardware or gardening stores, or online.


Cannabis plants can be grown in a variety of different soils, however, it is important to remember that the quality of the soil will directly affect the quality of the plant. When choosing a soil for your cannabis plant, make sure to select one that is high in organic matter and has a good drainage system.

Buy high-quality potting mix from a garden store

To give your cannabis plant the best chance of success, you need to start with high-quality potting mix and soil. You can find these at any garden store. Look for something that is labeled “for indoor plants” or “for container plants.” These mixes will be light and airy, and they will drain well. Avoid mixes that are too dense or too heavy, as these can lead to problems with drainage and root rot.

Once you have your potting mix, you will need to add some amendments to it. Amendments are materials that improve the quality of the soil. The amendments you’ll need to add will depend on the type of potting mix you’re using. If you’re using a coco coir-based mix, for example, you’ll need to add some extra calcium to balance out the coco’s high acidity. For more information on choosing and adding amendments, check out our complete guide to cannabis Amendments .

Mix in some organic matter like compost

To improve drainage, add perlite or coarse sand to the potting mix. For extra insurance against drainage problems, you can put a layer of gravel in the bottom of the pot before adding the potting mix. Be sure the pot has drainage holes in the bottom. Water your plant thoroughly and then wait for the water to run out the bottom of the container before watering again.


Water is critical for the success of your cannabis grow operation. But how much water does a cannabis plant need, and how often should you water it? The answer to these questions depend on a few factors, including the size of your plant, the stage of growth, and the type of soil you’re using. In this article, we’ll give you some general guidelines on how to water your cannabis plants.

Water your plant when the top inch of soil is dry

You should water your cannabis plants when the top inch of soil is dry. To check, insert your finger into the potting mix and feel around for moisture. If it’s dry up to your first knuckle, it’s time to water. If it’s still wet, wait a few more days and check again.

When you do water, make sure to give the plant enough so that water runs out of the bottom of the pot and into the saucer below. You don’t want your plant sitting in water, as this can lead to root rot. Allow the excess water to drain and then discard it so that you don’t accidentally overwater again in the future.

Use filtered or distilled water if your tap water is high in minerals

Cannabis plants love water, but they don’t love the extra minerals that can be found in tap water. If your municipal water supplier tests high for either calcium or magnesium, it’s best to use filtered or distilled water for your plants. You can purchase a simple water filter that attaches to your faucet, or you can buy distilled water by the gallon at most grocery stores.


To get started, you will need to purchase a high-quality cannabis fertilizer. You can find these online or at your local grow shop. Make sure to get a fertilizer that is specifically designed for cannabis plants. Once you have your fertilizer, you will need to mix it with water according to the instructions on the package.

Get a fertilizer designed for cannabis plants

Fertilizers contain three primary nutrients that are essential for cannabis growth: nitrogen (N), phosphorus (P), and potassium (K). Cannabis plants need these nutrients in different proportions at different stages of their life cycle.

For example, during the vegetative stage, when plants are rapidly growing and greening up, they need more nitrogen than phosphorus and potassium. However, during flowering, when plants are focused on producing buds, they need more phosphorus and potassium than nitrogen.

Because of this, it’s best to get a fertilizer that is designed specifically for cannabis plants. These fertilizers will have the right ratio of nutrients for your plants at each stage of their life cycle.

Follow the instructions on the packaging

It’s generally easier – and more fun – to grow one cannabis plant than several. Start with a strain that’s connoisseur-quality, so even if your grow operation is small-scale, you can still enjoy top-shelf herb.

The best way to get started is to purchase a grow kit that contains everything you need to get going, including high-quality planting mix, organic nutrients, and a sturdy growing container. Once you’ve got your supplies, it’s time to start planting!

Here are some general guidelines for fertilizing your cannabis plant:

-Follow the instructions on the packaging of your organic nutrient products. Over-fertilizing can damage your plant, so it’s important to stick to the recommended dosages.

-When in doubt, err on the side of under-fertilizing. It’s better to give your plant less food than too much.

-Monitor your plant closely and pay attention to its overall health and appearance. If it seems stressed or unhealthy, take a closer look at your fertilization schedule and adjust accordingly.


After around 3-4 months of vegetative growth, your cannabis plant should be ready to harvest. The exact time will depend on the strain you are growing, the size of your pot, and other factors. When you are ready to harvest, you will need to cut down the main stem of the plant.

Cut the main stem when most of the trichomes are cloudy

You’ll know it’s time to cut the main stem when most of the trichomes are cloudy. Trichomes are the tiny, translucent hairs on the buds and leaves of the plant, and they contain most of the cannabis plant’s THC.

To harvest, cut the main stem at a 45-degree angle about 6 inches (15 cm) below the last node. A node is where a leaf attaches to the stem. If you have a pair of sharp pruning shears, you can use them to make a clean cut. Otherwise, a sharp knife will do the job just fine.

Once you’ve cut the main stem, remove all the large fan leaves. These leaves don’t have many trichomes and won’t add much to your harvest. You can save them to make cannabis leaf hash or compost them.

Hang the plant upside down to dry

Hang the plant upside down to dry. Use a fan to circulate air around the plant and speed up the drying process, but make sure the fan is not blowing directly on the plant. Depending on the humidity and temperature in your grow room, it will take 3-14 days for your cannabis plant to dry. When the buds are dry to the touch and snap easily, they are ready to be trimmed.

Scroll to Top