Buy Marijuana Fertilisers

At GrowLobby you'll find a wide range of maximum quality cannabis fertilisers. From 100% organic fertilisers and fertilisers for cannabis to high-performance mineral salts, we have everything you need for your garden to reach its full potential. Discover base fertilisers, stimulators and additives from leading brands in the sector.

What is a fertiliser for cannabis plants?

A fertiliser for cannabis plants is a compound designed to supply the essential chemical elements that the plant does not always find in the substrate in sufficient quantities.

Unlike other plants, cannabis is a fast-growing species with high energy demand, so it requires a specific diet of macronutrients (Nitrogen, Phosphorus and Potassium) and micronutrients to complete its cycle successfully.

Why use fertilisers in cannabis cultivation?

The main objective of using fertilisers is to prevent deficiencies that slow down plant development. Fertilisers in cannabis cultivation allow you to:

  1. Accelerate growth: Obtaining larger plants in less time.
  2. Increase production: Denser, heavier and more resinous buds.
  3. Improve health: Plants more resistant to pests, fungi and environmental stress.
  4. Optimise flavour: Specific additives enhance the terpene and flavonoid profile.

Types of fertilisers for cannabis

Depending on your growing method and objectives, you can choose from different fertilisers for cannabis:

  • Organic Fertilisers: Derived from natural raw materials (algae, guano, plant extracts). Ideal for those seeking the best flavour and ecological growing. Brands such as Biobizz or BAC are leaders here.
  • Mineral Fertilisers: Highly soluble chemical salts. They offer fast and precise nutrition, being the favourites for hydroponics and growers seeking maximum production.
  • Bio-Mineral: A blend that combines the ease of mineral fertilisers with the benefits of organic ones.

When to start adding fertiliser to cannabis?

Knowing when to start is vital to avoid burning young plants:

  • Enriched substrates: If you use "All-Mix" type soil, you can wait 2 to 3 weeks.
  • Inert substrates (Coco/Hydro): You should apply cannabis fertilisers from when the plant has its first pair of true leaves.
  • General rule: Start with low doses of the best cannabis growth liquid and increase as the plant demands it.

What fertiliser stimulates flowering?

The best fertiliser for flowering is one rich in Phosphorus (P) and Potassium (K). Whilst in growth we seek Nitrogen, the cannabis fertiliser in the flowering phase should focus on fattening the calyxes and producing resin.

Growth and flowering fertilisers usually come in separate packs to cover these changing needs. Additionally, you can add a PK Boost from the fourth week of flowering for an explosive finish.

Top cannabis fertiliser brands

In our catalogue we select the most reliable cannabis fertiliser brands in the world:

  • Biobizz: Leader in organic fertilisers and environmental respect.
  • Canna: Specialists in professional solutions and coco/hydro growing.
  • Advanced Nutrients: Advanced scientific formulas to maximise cannabinoids.
  • Plagron: Versatility and quality in both organic and mineral.
  • Athena Nutrients: The new generation of high-purity mineral nutrition.

Buy cannabis fertiliser online at GrowLobby

At GrowLobby we make it easy for you. Browse our categories and find the cannabis fertiliser that best suits your needs. Whether you're looking for a complete growth and flowering fertiliser kit or specific additives, we offer you:

  • Expert advice: If you don't know what to choose, our team will help you
  • Fast and discreet delivery: Receive your products at home with total privacy
  • Competitive prices: From premium options to the most cost-effective cannabis fertilisers.

Buy your cannabis plant fertiliser now and receive it in just a few days at your home!