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Indoor Growing of Vegetables VS. Cannabis


First, overwatering is one of the most common causes of nutrient deficiencies and disease in cannabis plants. On the other hand, inadequate watering can stunt plant growth.

The main difference between cannabis and vegetable water requirements is that cannabis watering requirements change as the plant ages.

Avoid excessive watering of young cannabis seeds and clones.

In contrast, Earth only needs a light mist every two to three days.

Vegetables can vary greatly in the amount of water they need. For example, lettuce needs constant access to water. The root vegetable is more like cannabis and requires the most water during the intubation phase.

Note that overwatering is usually more harmful to cannabis than underwatering.

  • Overwatering is more dangerous than under water

  • Over-watering can cause nutrient deficiencies and disease in your plants


Second, as every gardener knows, all plants need carbon dioxide for the process of photosynthesis. In addition, higher CO² levels can increase the quality and quantity of vegetable and cannabis crops.

The moisture that plants need and their transpiration (moisture lost from plants) can vary from plant to plant. Again, the needs of cannabis plants vary depending on their life cycle.

The ideal humidity for cannabis seeds is 75%. This percentage drops to around 55% during the flowering phase.

Another factor to consider is the vapor pressure deficit, or VPD, which describes the relationship between moisture in the air and water on the leaf surface. Many cultures prefer a VPD between 0.65 and 1.25 kPa. Leafy greens thrive at the lower end of the range, while fruit and flowering plants (including tomatoes and cannabis) do better at the high end.

Temperature requirements also vary between different agricultural crops. Green vegetables thrive in cooler environments, while fruits and flowering plants prefer warmth. To grow cannabis indoors, temperatures should generally be kept between 77°F and 86°F (25°C to 30°C) to maximize yields.

  • Cannabis seeds need 75% humidity

  • Monitor vapor pressure deficit to maintain between 0.65 and 1.25 kPa

  • Keep the temperature between 25°C and 30°C (77°F to 86°F) to maximize yield

Third, another variable for indoor plants is the amount of light they receive. Most indoor vegetable growers aim for anywhere between 14 and 20 hours of light each day, which, of course, is far more than the plants would get outside.

Cannabis need 18 to 24 hours of daily light.

Cannabis growers must once again consider the stage of their plants when determining lighting needs. In the vegetative stage, the plants need 18 to 24 hours of daily light, but you can reduce it to 12 hours a day during the flowering stage.

A challenge for cannabis growers is to keep the dark hours dark. Even a small amount of light leaking into the flowering room can negatively impact the process.

  • Cannabis in the vegative state needs 18-24 hours of sunlight

  • 12 hours of sunlight is needed during the flowering stage


Lastly, you can propagate cannabis from seed or by cloning. Successful cloning can save the manufacturer time and money.

Successful cloning can save the manufacturer time and money.

Cloning, the process of creating genetic duplicates of native plants from cuttings, is not always possible or advisable for vegetable crops. For example, green leaf plants and many fruit plants are not cloned. However, herbs like rosemary and basil tend to clone well.

  • Consider cloning to save time and money

  • Cannabis can be cloned, but some vegetables cannot

  • Herbs are especially conducive to the propagation of branches

In short, whether you grow vegetables, herbs or cannabis, you can benefit from our Grow Higher vertical mobile grow rack. We are ready, willing and able to design a custom system for you and your business needs. Just contact us for a free consultation.

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