The average temperature outside during the day for most of the tropics stays around 65-85 degrees Fahrenheit. Indoor growers know this as a great temperature for growing most strains.
If vegging outside, you’d cut off the additional light you’re giving them and keep them outside.
Located between the Tropic of Cancer and the Tropic of Capricorn, the tropics are an equatorial zone where the sun’s light hits the earth from directly overhead at least once throughout the year.
Plants in the vegetative and flowering cycles sometimes have different needs too—you might need to cover or uncover greenhouses depending on the weather, and plants in the different stages will need different nutrients. It’s more labor-intensive to simultaneously meet the needs of plants in two different stages as opposed to having them all on the same schedule.
Indoor growers mimic this by having separate light spaces for vegging and flowering: Plants receive 18 hours of light and 6 hours of dark during the vegetative stage, and 12 hours of light and 12 hours of dark during the flowering phase. This reduction in light tells the plant to start flowering and produce buds.
If temperatures really start pushing towards extreme levels of 100ºF/40ºC then growers may be forced to move their plants into the shade (if they are transportable). Or they may wish to cover them with a tarpaulin (or similar) to protect them from the worst of the heat which is often around midday/afternoon.
What strains are best suited to be grown in hot climates?
To many outdoor cannabis growers a hot, sunny climate can seem like the perfect environment to grow cannabis. With hot weather you may be able to grow all year round and even get several successive crops from autoflower seeds. Mold and bud rot might seem to be an unlikely threat. Bright, intense sunshine is perfect for bud production. However a hot climate can bring it’s own problems, some of them serious.
Growing cannabis in hot/dry vs hot/humid climates
Often growers in hot and dry climates assume that sativa strains would give great results. True enough, many sativa seeds will deliver high quality results. But so will many indica strains. The dense, firm buds cope well in low humidity conditions. Provide the best cannabis seeds at the start and you can expect some seriously powerful results. The following strains are highly recommended for growers in hot climates with low humidities.