Growing Cannabis indoors takes a bit of practice and mileage to get that green-thumb of yours. In this Ultimate article, we will present you with the best tips and tricks on how to grow cannabis indoors. You should read it if you are just starting your grow journey or even you have already experienced grower […]
What is the perfect pH for cannabis and how to adjust it
Updated: December 5, 2021
Category: Cannabis Growing
When it comes to growing (anything), the pH of soil plays an important role. So, we're going to explain to you what's the perfect pH for cannabis and how to fix any soil to have that perfect pH value.
Perfect pH value for cannabis
pH values go from 1 to 11, where 1 is the most acidic and 11 the most alkaline. Cannabis plant prefers middle pH values or also known as standard values that vary from 5.5 to 6.5.
Otherwise, if pH value is too high (usually more than 7.5), roots become unable to consume needed substances such as zinc, iron, copper, etc. But when pH value is too low (usually below 5), the roots can no longer access calcium, magnesium, phosphoric acid, etc. And even though the cannabis plant is a very durable plant that tries hard to stay alive, both cases are usually devastating for her.
Soil with perfect pH for cannabis
Woodland soil is considered to have the perfect pH for cannabis but some praise the effects of sandy loam soil as well. That is because sand is good for drainage and loamy soil for nutrients and holding in the needed water.
For whatever soil you decide, just stay away from planting your cannabis plant in entirely sandy soil since it tends to be more acidic and entirely clay soil since it is alkaline.
Fix pH value of any soil
If you don't have access to the perfect soil, you can always fix whatever you find. Firstly, you need to measure what's the exact pH value. This way you'll know for sure whether you're dealing with acidic or alkaline soil.
When doing the low pH substrate correction, you can use flowable lime, hydrated lime or potassium bicarbonate. However, keep in mind that the latter should be handled with extreme caution. And for the soil with high substrate pH correction, you can use acid-based fertilizer, acid water drench or iron drench.
Also, keep in mind that water is a big factor that can affect your pH. Namely, every water, let it be city, pond or river water, each one has a different pH.
Do you want to learn
more about marijuana?
Check out our cannabis education section, where you can read everything from common knowledge to advanced growing cannabis techniques.
Join us
Join our insiders club for monthly motivation, news and presales. We are not going to spam your email box. We are going to send one or two emails per month. We promise they will be valuable.
You may also like
Ultimate Cannabis Outdoor Grow GuideRead More
Growing Cannabis outdoors, guerilla-style or not, takes a bit of practice and mileage to get that green-thumb of yours. In this Ultimate article, we will present you with the best tips and tricks on how to grow cannabis outdoor. You should read it if you are just starting your grow journey or even you have […]
Do I need to fertilize outdoor cannabis plants?Read More
If you are determined to grow healthy and happy marijuana plants, you probably have already been thinking about how to fertilize your soil. Fertilizers of some sort (whether organic or otherwise) are very important to make sure your plants are receiving all the nutrients they need. Since this is an outdoor guide lets see organic […]
Hydroponics (pros and cons)Read More
Hydroponic indoor farming systems are extremely popular and are likely to become more and more popular. Hydroponic systems are suitable for both recreational and professional use. Direct control options mean higher yields, especially where the right nutrients are used. With the current sophistication of measuring equipment and technological advances in the industry as a whole, […]
