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What is a Grow Cube and how do you Use One to Grow Weed?

Inside a grow cube

A grow cube traps odors and feeds little cannabis plants from seedling to bountiful harvest. You can grow a lot of cannabis in a little area if you obtain one with a decent grow light. Any high-quality cannabis LED grow light in the 100W range should be sufficient. When properly set up, you may generate a remarkable quantity of cannabis in a little area!

What is a grow cube?

A Grow Cube is a fancy name for a compact, flexible grow tent that works great for cultivating marijuana. When everything is tucked away, it resembles a large black cube. It is a simple method of growing cannabis that can be tucked away in a spare corner of your bedroom.

How to Put Together a Cannabis Grow Cube

Putting together your grow cube should be pretty straightforward, especially with the following steps:

Follow the instructions to erect the grow tent (much like a camping tent)

A standard grow tent has several components, including the setup instructions. To begin, assemble the framework by connecting the poles by clicking them together. Then, dress it up by placing the “tent” over the outside. Finally, insert the waterproof, flexible tray. All done!

Install the exhaust fan and carbon filter in the bottom vent

This step is necessary for the grow cube’s cooling, humidity removal, and odor containment.

  • Option 1: First, you may install a carbon filter in the bottom port of the tent and run the exhaust duct outside the tent. Unfortunately, there will be some lost interior space due to this arrangement. By doing so, the filter will remove any odors in the tent before the air is released.
  • Option 2: The second option is to place the carbon filter and the fan outside the tent. With this setup, you may cultivate plants across the whole interior. To achieve this, insert the fan into the indicated port and link it to the filter. The filtered air is forced into the room using this method. The fan and filter are placed in a bottom port and rest on the floor in this configuration. Another option is to have them sit above the tent in a top port.

Connect the timer to a power source

Connect the electrical timer. You may program it to turn off the lights six hours a day (so they’re on for 18 hours total) at the specified time. An 18/6 timetable describes this arrangement. It doesn’t matter what cannabis variety you’re cultivating; an 18/6 light cycle is ideal for seedlings.

Plug the LED into the timer and suspend it from the ceiling using the accompanying hanging hardware

You can use the Spider Farmer SF1000, which has a dial for adjusting the light’s brightness and an on/off button that eliminates the need to disconnect it.

Start the system and wait 24 hours before adding any vegetation

Give it a full day of operation to ensure everything is in working order before planting.

The Ultimate Guide to Cultivating Cannabis in a Grow Cube

It’s high time you started a cannabis grow. To succeed, please carry out the steps outlined below.

Germinate your seeds

Germinating cannabis seeds in soil is the simplest approach. Begin by moistening your soil, and then plant your seed. Create a little opening, drop in a cannabis seed, and then cover it up. If you keep the soil moist, turn on the lights in your cannabis grow cube, and wait a few days, you should have a seedling. Cannabis seedlings need just a few drops of water at a time, spaced out over a few days. You may water the seedling like any other plant when it is larger.

Vegetative stage

Here are the priorities throughout the cannabis plant’s vegetative phase:

  • Nurture plant health. Maintain a consistent schedule of fertilizing and watering the plant. You may want to test the pH if you have noticed a lack of nutrients. Leaves will develop spots and other abnormalities if the soil pH is too low or too high.
  • Train vegetation to grow broad and flat, like a table.
  • Hold off until they’re halfway to the size you want them to be. When plants have grown to around half their ultimate size, it’s time to transfer them to the next phase. After entering the blooming phase, their size often doubles.

The following is an outline of the process for training cannabis plants into the shape of a table:

  • Trim the tops off your young plants: Young plants in the vegetative stage should have their tops lopped off. This process is called “topping,” which refers to cutting the very top of a cannabis plant. Any stem may be topped, and plants with two tops are more adaptable to being spread out into flat plants than those with a single, dominant top.
  • Hint for novices: Hold off until six sets of leaves are on the seedling. Cut the main stem off at an angle just above the fifth set of leaves. It’s uncomplicated and won’t do any harm to the plants. After being topped, your plant will grow more broad and bushy without further effort.
  • It is also important to “top” tall stems: If one of your stems is growing considerably more than the others, trim its tips. The fresh stems’ growth rate is lower than the older ones. Topping is useful for controlling vigorous stem growth during the vegetative phase.
  • Spread out: Spread out the plant as it develops by bending the stems down and away from its core. Avoid the hassle of re-emerging branches by tying them down the night before using plant twist ties.
  • If required, supercrop: Over time, a cannabis plant develops woody, brittle stems. Stems that are too rigid to bend may be bent at any angle with the help of the supercropping method. This technique is quite complex since stems may be easily separated in error. It’s okay if you do, however. You may help a plant recover from damaged stems by taping them together like a cast. Cannabis plants are forgiving if serious errors are made during the vegetative phase.

If you are dealing with an autoflowering cannabis plant, there are several things to look out for. This guide should come in handy:

  • Cut just above the fifth set of leaves to prune a young plant.
  • Take care not to sever the growth points at the bottom of each leaf while cutting through a stem. These will serve as your new stems.
  • Topping divides the main stem into two halves. As a result of the severance, you create two “main stems.”
  • Likewise, since you delayed until the plant had developed multiple sets of leaves before clipping off a little section, the rest of the plant will continue to grow normally.

You should top any too-tall stems and encourage new growth by spreading the branches. It’s not good for the plant to focus all its resources on just one branch.

Vegetative weed in a grow cube

  • When to start the flowering phase

Autoflowering varieties take around four to six weeks from seed to harvest time. At that moment, it doesn’t matter how big your plant is; you have to advance to the next level. On the other hand, photoperiod plants tend to remain in the vegetative stage until you “tell” them to begin flowering and bud formation by switching to a 12/12 light cycle. The long nights mimic the late summer light, causing the plant to “think” winter is approaching, causing it to enter the second phase of life.

Flowering stage

The following are the main objectives during the blossoming stage:

  • Use the 12/12 light schedule to kick off blooming. Get the plants to start forming buds/flowers (this step is redundant if you’re cultivating autoflowering strains since they blossom after a few weeks, irrespective of the light schedule).
  • Allow light and air to reach the flower buds. To ensure that your bud sites get enough direct light and mild air circulation, defoliate them strategically or tuck away any extra leaves. Increasing the amount of light reaching your buds may boost their overall potency.

When the plants have full covering at the desired height, begin the 12/12 cycle.

Harvest, dry, and cure

Your buds will be ready to harvest when almost all white hairs become darker and curl in. While it may seem like your growing duties are done now that your buds are mature, that is not the case. Newly picked cannabis buds still need to go through curing and drying.

To guarantee the finest quality for your newly collected buds, you need to cure them. Curing begins with slowly drying cannabis buds in a controlled setting, followed by keeping buds in glass jars for a few weeks to allow a few specific plant-based processes to occur. The drying and curing processes enhance the aroma and potency of weed. When cannabis is dried correctly, it has less of a hay aroma.

Buds of cannabis are not at their most potent or flavorful until they have been dried and cured. The distinction between “just okay” and trophy-worthy buds is made during the drying and curing process, provided that you began with exceptional cannabis genetics and cared for your plants appropriately throughout their existence.


Using a grow cube to enjoy cultivating cannabis plants can be fun if you are well-prepared. It allows you to nurture your plant from seed to harvest. You work so hard, so it’s only fair that you want the best from your grow cube. If you follow the advice in this guide, you’ll be enjoying your weed in no time.

Picture of Marcus Smith

Marcus Smith

Marcus is a relative newcomer to the cannabis world. Though it may seem that his youth wouldn’t allow for a wealth of knowledge, this is untrue. Marcus Smith has close relationships with many cannabis breeders and grow owners which have allowed him to sample the best cannabis across the US and beyond while also gaining valuable insight into how different strains grow and develop. About this Author

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