Developing in Paradise: A Beginner’s Guide to Outside Cannabis in Tropical Climates


In the fall of 2016, I left the gloomy Northwest for the warmer climate of the Virgin Islands. Initially intending to operate on a boat and sail about the Caribbean, I as an alternative got involved in a operate-exchange system and set up a self-sustaining farm.

I met lots of other people in the farming neighborhood of St. Thomas. Individuals grew vibrant and astounding fruits and vegetables foreign to the Northwest’s soil: mangoes, papayas, avocadoes, coconuts, pineapples, bananas, sugar cane, and coffee. A lot of farmers also grew cannabis. (To be clear, cannabis is illegal in the Virgin Islands, even though they recently voted in healthcare cannabis.)

Tropical climates can teach a lot about increasing cannabis, each indoors and outdoors. No matter if or not you like the heat and humidity of the area, your burgeoning cannabis plants adore it.

Why Develop Cannabis in the Tropics?

Positioned among the Tropic of Cancer and the Tropic of Capricorn, the tropics are an equatorial zone exactly where the sun’s light hits the earth from straight overhead at least when all through the year.

Even indoor growers can understand from the situations in the tropics. The light and climate of the area are very good examples of what to reach in an indoor atmosphere. If you are new to increasing, considering about a tropical climate can assist guide how you set up your operation. Just make positive you pick strains that will thrive rather than endure in a hot, humid climate (a lot more on that under).


Cannabis is a photoperiod plant, its flowering cycle triggered by a reduction in light—outdoors, this is when the sun begins to go down in the sky as fall approaches.

Indoor growers mimic this by obtaining separate light spaces for vegging and flowering: Plants get 18 hours of light and six hours of dark in the course of the vegetative stage, and 12 hours of light and 12 hours of dark in the course of the flowering phase. This reduction in light tells the plant to start off flowering and make buds.

Tropical regions get about 12 hours of sunlight a day for most of the year. This signifies that the sun in the tropics gives the most natural—and free—flowering space on the planet.

There is some variance in sunlight based on the time of year and exactly where particularly you are in the tropics, but it is a negligible amount—only an hour or so.


The typical temperature outdoors in the course of the day for most of the tropics stays about 65-85 degrees Fahrenheit. Indoor growers know this as a excellent temperature for increasing most strains.

Outside humidity in most of the area ranges from 60 to 85%, which can be a small higher for increasing cannabis, but just make positive you get lots of airflow by means of your greenhouses.

This is exactly where precise genetics will assist as well, as particular strains fair far better in humid climates (a lot more under).

Some tropical places get lots of rainfall—up to 80 inches a year—so be positive to cover your greenhouses and preserve your plants dry.

How to Develop Cannabis in the Tropics

According to farmers in St. Thomas, there are two approaches to go about cultivating cannabis in the tropics:

  • Veg plants inside of a creating and use artificial lights for the whole 18-hour light cycle every single day (like a regular indoor veg space)
  • Veg outdoors and beneath a covered greenhouse, supplementing the sun’s 12 hours of light with further artificial light for aspect of the day

Regional growers have a tendency to choose the latter setup.

For flowering, if your plants are vegging inside, you would move them outdoors and beneath the sun when you are prepared to flower.

If vegging outdoors, you’d reduce off the further light you are providing them and preserve them outdoors.


No matter if vegging or flowering outdoors, you will have to have an outside structure like a greenhouse. There are lots of approaches to make a DIY one particular. You need to be in a position to cover and uncover the structures very easily, in case the climate turns or to deliver air circulation by means of the crop.

No matter if increasing indoors or outdoors, your veg structure wants to be light-tight. If increasing outdoors, you’d have to have to add further lighting inside your greenhouse so that plants can get the complete 18 hours of light they have to have when in the vegetative stage.

You do not have to have substantially supplemental light on a everyday basis—only an further 4 or 5 hours and the sun will deliver the remaining 12 hours. You will have to have to commit some income on electrical energy for further lights, but not as substantially as you would in a strictly indoor operation.

Due to the fact of the further light necessary for vegging, it is difficult to veg and flower plants at the similar time outdoors due to the fact you do not want stray light from vegging to hit your flowering plants. This tends to make setting up a perpetual develop outdoors tricky.

Plants in the vegetative and flowering cycles often have diverse wants too—you may have to have to cover or uncover greenhouses based on the climate, and plants in the diverse stages will have to have diverse nutrients. It is a lot more labor-intensive to simultaneously meet the wants of plants in two diverse stages as opposed to obtaining them all on the similar schedule.


A lot of cannabis farmers in the tropics frequently develop “seasonally,” which means that the whole crop is grown and then harvested. It is not precisely “seasonal” although due to the fact the constant sunlight all through the year signifies you can develop many harvests a year.

From seed/clone to harvest requires about three-four months, so you could have three-four massive harvests a year with this technique, in which you reduce down all of your crop and then replant a complete new crop when carried out harvesting.

The Greatest Strains for Tropical Climates

Despite the fact that not native to the area, lots of varieties of cannabis thrive in the tropics. Sativa cultivars have a tendency to develop far better due to the fact of their tall stature and a lot more open bud structure. Indicas can be tougher to develop due to the fact they have a tendency to develop quick and stout and have denser buds, producing it tougher for air to flow by means of them. Indicas have a tendency to mold faster due to the fact of this.

That becoming mentioned, some sativas develop quick and some indicas develop tall. It is generally essential to know your genetics, exactly where they came from and how they’ll develop.

Right here are some renowned strains grown in the tropics (you will notice that they’re all sativas):


Latest posts