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12 April 2025

The Bulldog Seeds x Mills Nutrients Master Grower: What’s the ideal temperature when growing cannabis?

Combine legendary cannabis genetics with cutting-edge nutrients, and what do you get? The Bulldog Seeds x Mills Nutrients Master Grow collab. The Bulldog Seeds is teaming up with Mills Nutrients to bring you the best and most informed growing tips you’re likely to come across. Mills has some of the best growers and is involved in some of the most innovative projects in cannabis today. Through this collaboration, TB Seeds and Mills will break down growing essentials, starting with one of the most overlooked growing factors: the best temperature for cannabis growth.

Quick Answer:

The best temperature for growing cannabis depends on the stage. During veg, keep it warm: 24°C – 28°C in the light and around 21°C in the dark to push strong growth. Once flowering kicks in, lower it to 20°C – 24°C (light) and 17°C (dark) to boost trichome production and lock in terpene-rich flavours. Steady as she goes because your plants will feel too much fluctuation.

What is the ideal temperature for growing cannabis plants?

Growers often overlook things like temperature when setting up a grow room. Not monitoring the temperature can cause problems from plant shock to heat stress, but maintaining the optimal temperature for cannabis plants is not as complicated as it might seem. The first thing to be considered is that the ideal temperature for growing cannabis plants varies depending on the growth stage.

Vegetative: Building Strong Foundations

During the vegetation stage, which usually lasts until the end of week 3, the temperature should be at 24°C – 28°C during the light time, which is generally 18 hours, and around 21°C during the 6 hours of darkness.

Flowering (Week 4 Until Harvest): Unlocking Potency & Flavour

During the flowering phase until harvest, the plants should be exposed to 12 hours of light and 12 of dark. During this phase, the plants should be kept at around 20°C – 24°C during light and around 17°C during dark.

Why Cannabis Plants Need Cooler Temps During Flowering?

Lowering the temperature in the grow space during flowering will slightly improve things like trichome production, colour expression, and terpene profiles. It mimics the plant’s natural environment, triggering deeper hues and resin production, resulting in more potent flowers.

Optimal Temperature for Cannabis Plants

Cannabis plants are resistant, but they don’t like fluctuations in temperature, and if it gets too cold in your grow room, your plants will go into shock. Ensure the temperature of your grow room never drops below 16°C or exceeds 30°C. Reaching over 30°C, except for growers using COâ‚‚, will produce fluffy buds with reduced density, potency, and terpene content.

What is The Best Temperature for Drying Cannabis?

Post-harvest is arguably the most critical stage of growing cannabis, so you want to make sure you get the temperature right when drying cannabis flowers. Dry your freshly harvested cannabis in a completely dark but aerated place for 12-14 days at 18°C. Don’t be tempted to rush this process because it will reduce the smell, taste, colour and potency.

Why Mills Master Grower x Bulldog Seeds?

The legend keeps growing, and this collaboration is built to support you in growing your own legend. This collab isn’t just about big yields; it’s about growing the best, high-quality genetics with precision and expertise. Mills Nutrients provides growers with what they need every step of the way, from seedling to cure; Mills x Bulldog Seeds is the perfect balance of culture and innovation. It brings together years of expertise in genetics and nutrition to ensure every grower, whether a novice or an old pro, can get their best harvest yet.

Grow smarter. Grow stronger. Grow your own legend with Mills and The Bulldog Seeds.

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