10 Best Fertilizer For Marijuanas 2025 in the United States

The FoxFarm Fertilizer Soil Trio is a solid choice for those looking to enhance their marijuana plants. This trio includes Grow Big, Big Bloom, and Tiger Bloom, which are designed to work together to support healthy growth, flowering, and fruit production. The N-P-K ratios in these fertilizers cater to different growth stages, with Tiger Bloom focusing on phosphorus to boost flowering, while Grow Big supports vegetative growth. This balanced approach allows growers to provide targeted nutrition throughout the plants' life cycles.

One of the product's great strengths is its organic status, with Big Bloom being OMRI Listed, making it a suitable option for those who prefer organic gardening. The ease of use is another plus; you can apply them regularly with each watering, simplifying the feeding routine. This makes it ideal for beginners who may not have extensive experience with fertilizers.

However, there are a few drawbacks to consider. Some users have noted that the liquid formulation can be messy if not handled carefully, and it may require precise measurements to avoid over-fertilizing. Additionally, while it's great for supporting plant growth, the need for three different products might be overwhelming for novice gardeners who are just starting out.

The Fox Farm Dirty Dozen Starter Kit is a comprehensive fertilizer package designed to enhance the growth and bloom of various plants. This kit includes 9 liquid nutrients and 3 soluble fertilizers, each aimed at different growth stages, making it a versatile solution for gardeners. The inclusion of well-known products like Open Sesame, Beastie Bloomz, and Cha Ching highlights its focus on boosting bloom and plant health.

The N-P-K ratios and specific nutrient formulations in these fertilizers cater to the varying needs of plants throughout their growth cycles, which is great for ensuring lush, vibrant gardens. The kit is organic, which is a plus for those looking for eco-friendly options. Each component is user-friendly, making the feeding routine straightforward, which benefits both novice and experienced gardeners.

The product's weight and dimensions make it easy to store and handle. This starter kit is highly recommended for those looking to provide comprehensive care to their plants, ensuring healthy growth and vibrant blooms all year round.

The CANNA Growing Nutrients Set is a liquid fertilizer kit designed to support various growth stages of marijuana plants, including root development, vegetative growth, and flowering. It combines several products like Canna Coco A + B, Rhizotonic, Cannazym, Boost, and PK 13/14, which together provide a balanced supply of essential nutrients. The inclusion of PK 13/14 indicates strong support for the flowering phase, which is crucial for producing large buds. This set is synthetic-based, offering precise nutrient control and easy absorption, but it may not appeal to those seeking fully organic options. The liquid form allows for flexible and straightforward mixing, though beginners might find mixing ratios challenging.

Weighing about 16 pounds with multiple components, this set is well-suited for medium-scale grows. It provides a comprehensive and reliable nutrient system for marijuana plants without requiring growers to manage complex nutrition details.