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How To Care For Marijuana plants




potting plants

When young, it is virtually impossible to tell the gender of a marijuana plant. Just like college parties, you don’t want to end up with more male plants than female plants. The same is true with female plants. The ratio of male to female plants should always be one to one.

what is the  best time to thin marijuana plants?

The best time to thin marijuana plants is when the plants are close to a month old, why? At that age, it is easier to tell male plants from females.

The difference between male and female marijuana plants is:

  • At less than a month old, Male marijuana plants appear taller and better developed than females.
  • Female plants have stronger root systems.

If you remove the smaller plants and leave only the tallest plants, you may end up with a “sausage party” and you don’t want that. Therefore, don’t thin the plants when very young. Let them grow together for close to a month. When the time comes, only leave the strong healthy plants. The plants you should thin out are:

  • Plants with white, yellow, or distorted leaves.
  • Underdeveloped plants

Cut the unwanted plant near the base, you can leave the root system in the pot.

Transplanting seedlings


The best time to transplant marijuana seedlings is when they are a week or two weeks old. This is a delicate process so don’t rush it. The important thing to remember is. Do not to disturb the roots. If you disturb the roots, you may “shock” the plant. Transplant shock will slow down or delay growth, so be very careful when doing this.


  • Moisten the soil in the pot where the plant is growing and let it sit for a few minutes.
  • Use a large spoon to take out a good-size wedge of soil (leave one inch space from spoon to stem).
  • Place the plant in a prepared hole or pot.

If you are transferring a plant from a small pot to a larger pot, the best time to do it is when the root system fills the pot. Marijuana roots will fill a small pot very fast. The procedure is a little similar to the one above. To get the plant safely out of the pot, run a knife around the sides of the pot.  If the drainage holes are plugged, they will stop air from displacing the soil and you may end up causing damage to the plant.

Make sure that the soil you transfer your plant to, disperses water evenly and has the same osmotic properties as the soil in the pot.

Read: A Simple Guide to Growing Marijuana at Home

When to transplant

6 ounce cup 2-3 weeks
4 inch pot 3-4 2eeks
6 inch pots 4-5 weeks
8 inch pot 7-8 weeks
2 gallon container 10 weeks


How to protect marijuana plants from cold weather

During winter, temperatures go down. If you are growing weed indoors keeping your plant warm is easy. However, if you are growing outdoors, you will have to find ways to protect your plant from the weather.  Outdoors, the easy thing to do is to build a mini-greenhouse around your plant. This will create a micro-climate where plants can grow well in cold conditions and seeds can germinate.


How fast or how slow your plants grow, depends on light. If your plants don’t receive enough light, they will die. That means that. It is important to keep all marijuana plants close to a light source. Some plants will grow faster than others; it is therefore up to you to make sure that the smaller plants also get light. To keep your plants from growing unevenly, you should raise the shorter plants up to the lights.

Female plants require more light than male plants, if using fluorescent lights. You should keep the female plants close to the middle of the lights where light is strongest.

Mistakes to avoid

Over feeding and over watering your plants

Putting excessive amounts fertilizer or overfeeding marijuana plants will not make the plant grow faster. Instead, you may end up killing the plant. Your plant will require a steady supply of nutrients in order to grow to a large size. That doesn’t mean that you should fertilize your plants daily or weekly. Bulk fertilizers such as compost, humus, and concentrated fertilizers, are best added before planting. Mix the soil with the fertilizer then plant.

Once the plant starts growing, adding bulk fertilizers will encourage the growth of mold and fungi. Also, concentrated fertilizer can damage marijuana plants if the stem or root comes into direct contact. The best way to add fertilizer to growing marijuana plants is in solution form. Dissolve the nutrients in water once every two weeks, and water the plant as usual.

The soil and the size of the pot will determine the amount of fertilizer needed. You don’t have to fertilize the plant until it is at least a month old. To be safe read the instructions on the bag of fertilizer you buy.

The issue of water is very straight forward. Too much water will kill your plant. If the plant doesn’t get enough water it will dry up and die.

The amount of water your plant needs varies on size, temperature, and health. If under-watered or over-watered the plant will look droopy and weak, the plant will look like its dying. So pick the right size container and keep an eye on your plants.

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