Choosing Fertilizer for Weed

Fertilizer for weed comes in many shapes and forms. Depending on how you plan on growing your own cannabis, you will need to figure out the right type for you.

There are 3 major categories when it comes to fertilizer for weed; liquid, powder, or compost. They all have their pros and cons and we will explore each one to see which will work best for you.

Liquid Fertilizer for Weed

Liquid fertilizer for weed

Liquid fertilizer is one of the favorites when it comes to cannabis growing and for many grain crops too. Both soil and soilless setups do well with some liquid nutrients over the course of the growing period.
The feeding schedule mostly depends on the kind of setup you are using. A hydroponic setup is likely to get more nutrients than the alternative, which uses soil. The soil setup should get liquid nutrients at least every other time you are watering your plants.
At the very least, you could add liquid nutrients three times before the plants start flowering. The amount of fertilizer you use depends on your plants’ response to the fertilizer. You have to watch how your plants respond to the fertilizer because too much could cause nutrient lockout and too little could bring about stunted growth.


  • Your plants are exposed to more nutrients
  • Easy blending of fertilizers
  • Blends easily with crop protection products
  • Application can be done at the start of the season or
  • Fast acting


  • Can easily be excessive
  • Short shelf life
  • Contains a lot of stabilizers and preservatives
  • Needs a lot of blending to strike the right balance

Powder Fertilizer for Weed

Reefertilizer Start Grow and Bloom Complete Grow Kit

Powder fertilizers are another popular choice that many growers use especially during the start of the season. Powder fertilizer works pretty well both for soil-based and hydroponic plants. Most growers prefer the powder type since it has some advantages over liquid varieties. For starters, many liquid fertilizers are derived from granular and powder ingredients so you are getting the same fertilizer, just in a different form. As you plant your cannabis plants, you want the most effective products whose concentration and control you can manage. This is what you get when you go for powder and granular fertilizers. It is especially important to think about the type of fertilizer when you are using a hydroponic setup, which absorbs more nutrients every time you administer.


  • Cost efficient
  • Better control
  • Better timing
  • Longer shelf life
  • Highly soluble
  • Good nutrient concentration


  • Dust in the air
  • Precise timing is vital

Compost Fertilizer for Weed

Organic food is all the rage these days and the excitement has been transferred to the cannabis growing community. The debate on whether to use organic or chemical fertilizer is ongoing in the cannabis community even though most people are of the opinion that using natural fertilizer over processed types is a no-brainer. One thing you will like about natural fertilizer is that it functions well for both soil and soilless growing. Natural fertilizer not only improves your flowers but your growing medium too. Most growers who go for the natural fertilizer do so because it increases the flavor profile of your plants as well as the amount of yield. The fact that the nutrients are readily available also helps.


  • Nutrients are released slowly so that there is no burning
  • Sustainable and renewable
  • There is a reduced chance of nutrient run-off
  • Increases diversity and quality of life in the soil you use for planting over repeated use


  • Takes some time before it is absorbed into the plant
  • Costs a lot to keep a steady supply
  • Likely to introduce pests and insects

There you have it. A complete summary of the different types of fertilizer for weed. Depending on your skill level and growing medium, you should now have a clear choice for which fertilizer you will want to use in your next grow. So many companies out there will tell you there stuff is the BEST or that it will give you “80% bigger yields!!!”. Forget all that jive and educate yourself. Reefertilizer is only here to make things simpler for people who want to grow cannabis. We want you to experiment and try new things, that’s the best way to learn to grow good weed! Thanks again for reading, and please share this article with your friends if you found it useful.

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