How to Clone Cannabis in Water

How to Clone Cannabis in Water: Complete Guide

Cannabis clones are cuttings that create an exact copy of the parent or “mother” marijuana plant. As expected, you know that all clones will grow like the parent plant. Cloning is an excellent way to produce plenty of cannabis plants at once for free. If you find purchasing seeds are too expensive or creating your cannabis seeds is not feasible, then weed plant cloning is more affordable. Learn how to clone cannabis in water by reading below.

General Tips On How To Clone Cannabis In Water

When you want to know how to clone cannabis in water, this is the type of guide that you need to get started.

Choose A Clone

You will first need to choose a clone. You can use the seeds that have been taken from your cannabis plants. Once you have a clone in hand, you will need to decide whether or not to use it or if you are going to clone another plant and then grow from it. If you decide to clone another plant, you will want to use this clone as the base of your plants. This will ensure that you are getting the most out of the original plant’s traits and that the new plant is still growing.

Prepare What You Need

Before you clone the clone, however, you will need to make sure that you know how to clone cannabis in water and make certain preparations for the cloning process. Some of the things that you will need are a clone extractor, nutrient solution, and water.

Take Note of the Cloning Process:

  • Determine the branches of cannabis plants be trimmed.
  • Trimming or pruning to expose the area that will grow roots later on.
  • Soaking the cannabis stems in water.
  • Wait for the roots to grow.
  • Transfer cannabis to a grow medium.

Make sure that you follow these instructions to make sure that you are cloning correctly (check the cup method of cloning cannabis in detail below). If you are doing this properly, you will find that you can clone various types of cannabis easily and that you will find that it will save you money and time in the long run. 

Cloning Cannabis In A Cup Of Water

You can clone the weed plant by putting a branch in a cup of water. Leave the cup in a warm sunny area and wait two to three weeks for plant roots to form. Remember that some marijuana plants take shorter or longer to form roots. You will be able to grow as many weed plants using this method as you want to without having to worry about growing them all at the same time.

How to Clones Cannabis Via The Cup Method

Cloning cannabis via the “cup method” is relatively easy and it does not take much space, equipment, and effort. In this section, you will go through the process of cloning cannabis step by step. 

Things You’ll Need: 

  • A weed plant with at least 7 inches long branches, which will become your weed clones
  • Fresh clean water (any human-drinkable waterworks, spring water is perfect)
  • Sharp scissors
  • A container  or cup to put your cannabis clones 
  • Optional supplies include vegetative nutrients (added to water at seedling strength) and cloning gel or powder)

Step-By-Step Cannabis Cloning Instructions Via Cup Method

For first-timers in making cannabis clones, take cuttings from a vegetative weed plant that has not begun flowering yet. When we say the vegetative plant, it means that it is only growing cannabis with leaves and stems without buds or pistils yet. Weed plants during the vegetative stage tend to root more easily and quickly.

On the other hand, marijuana clones taken in the flowering phase may take longer to make roots. Sometimes, for the first few weeks, they present odd growth patterns after rooting. Also, some growers take flowering cannabis clones on purpose to take advantage of the said growth patterns, which is referred to as monster cropping. However, monster cropping is an advanced growing technique suitable for seasoned cannabis growers.

  • Step One: Determine which branches are at least 7 inches (18centimeters) long on your vegetative cannabis plants. This size of cannabis will fit in a drinking glass or cup with the leaves reaching over the top of the glass, “spreading their wings” into the light.
  • Step Two: It is time to trim the stems of your weed plant until you see the top two pairs of leaves. It is important to clean up the stems. By doing so, you don’t let the leaves sit underwater in the glass. It is easier to clean and cut the sides of the stem early than after the clones were already cut.
  • Step Three: Cut off the cannabis clone and put it in the water right away. Do not forget to label the cups with the name of the weed strain because it is easy to forget them. Attempt to cut at a 45-degree angle. Cut a node or set of leaves if possible to help cannabis clones root faster.
  • Step Four: Place new cannabis cuttings in a warm bright area to make roots. You can place them in a sunny window. For the first two days, you can leave the blinds closed so your cuttings get filtered light. You can open the blinds and windows after two days or so. In this way, your cuttings will get direct sunlight for most of the day, keeping them healthy.
  • Step Five: Wait for the roots to form. It usually occurs within two to three weeks. Remember that your cannabis cuttings must be healthy-looking and straight upright the whole time. After about two weeks, roots will be observed on some plants that look like little nubs, which will develop into recognizable roots later on. It is normal if you observe the bottom of the cannabis stems turn brown, which is a normal part of the cloning process.


Now you know how to clone cannabis in water. By following the step-by-step instructions above, you will be more confident to do the cloning of cannabis via the cup method right. There are other ways to clone cannabis plants, but cloning them in water is a relatively easy method. You can produce a lot of similar cannabis plants for free once you have mastered how to do it. Just make sure you have the right supplies, time, and knowledge to kickstart cloning your most favored cannabis. 

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