Why 5.8–6.5 Is The Ideal pH for Cannabis (And When to Adjust)
Getting your cannabis pH right is one of those things that separates a smooth grow from a frustrating one. You can have solid genetics, a clean setup, and a dialed-in feeding schedule, but if your pH is off, your plants won’t perform the way you expect. Most growers land in that 5.8 to 6.5 range for a reason. That’s where cannabis plants can actually take in the nutrients you’re giving them. Step outside that range and things start to break down fast. Growth slows, leaves change color, and you end up chasing problems that don’t make sense at first.







