MINERAL

Green House Powder Feeding Long flowering is a concentrated powdered fertiliser for the growth and flowering stages, suitable for plants with a long flowering period. Its formula includes all necessary micronutrients for large flowers and healthy plants. It contains a high amount of phosphorus (P), needed to develop a strong root system. Suitable for the entire growing period.

For better results, combine with GH Powder Feeding Grow and GH Powder Feeding Booster

• Easy to use, store and transport
• Longer shelf life than liquid fertilisers
• The prepared solution remains usable for up to 1 week
• N-P-K: 18-12-18
• Includes a measuring scoop

Directions for use:

• Soil - dissolve the recommended dose in the irrigation water. Stir vigorously for 2-3 minutes. Apply the fertiliser with every second watering.
• Hydroponics / Coco – dissolve the recommended dose in the irrigation water. Stir vigorously for 2-3 minutes. Use the nutrient solution with every watering.

Application rates: 

• Young plants: 2.5-7 g / 10 L water
• Growth/flowering: 7-10 g / 10 L water

Recommendations and advice:

• Stop using the fertiliser 10 days before harvesting.
• Fertiliser doses are calculated for dissolving in water with EC=0.0
• The resulting solution can be stored for up to 7 days at room temperature in the dark (it maintains stable pH and EC values)
• The colour of the solution may change when exposed to sunlight
• Recommended solution pH: during growth 5.5-5.8; during flowering 5.8-6.8

In addition to the main NPK components, it also contains: magnesium (Mg), boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn)

Application schedules:

• Soil
• Coco
• Rockwool 
• Simplified (Keep it simple!)

Green House Powder Feeding Grow is a concentrated powdered fertiliser for the growth stage, suitable for all plant types and growing methods. Its formula contains optimal concentrations of the micronutrients most needed during growth for greener, healthier and more resilient plants.

• Easy to use, store and transport
• Longer shelf life than liquid fertilisers
• Also suitable for foliar feeding
• The prepared solution remains usable for up to 1 week
• N-P-K: 24-6-12
• Includes a measuring scoop

Application method

• Soil - dissolve the recommended dose in the irrigation water. Stir vigorously for 2-3 minutes. Apply the fertiliser with every second watering.
• Hydroponics/ Coco - dissolve the recommended dose in the irrigation water. Stir vigorously for 2-3 minutes. Use the nutrient solution with every watering.
• Foliar - dissolve 100ml of the nutrient solution in 900ml of water.

Application rates 

• Young plants: 2,5-5 g / 10 l water 
• Mother plants (3 weeks+): 10 g / 10 l water

Recommendations and advice:

• Fertiliser doses are calculated for dissolving in water with EC=0.0
• The resulting solution can be stored for up to 7 days at room temperature in the dark (it maintains stable pH and EC values)
• The colour of the solution may change when exposed to sunlight
• Recommended solution pH: 5,5-6 

In addition to the main NPK ingredients, it also contains: boron(B), copper(Cu), iron(Fe), manganese(Mn), molybdenum(Mo), zinc(Zn)

Green House Powder Feeding Booster is a mineral powdered fertiliser for boosting flowering and fruiting(booster). Its formula also includes micronutrients to balance the nutrient solution and ensure high uptake of vital phosphorus (P), potassium (K) and magnesium (Mg). With this flowering booster you can reach the full potential of your plants.

Combine with GH Powder Feeding short flowering or GH Powder Feeding long flowering or GH Power Feeding Hybrids.

• Easy to use, store and transport
• Longer shelf life than liquid fertilisers
• The prepared solution remains usable for up to 1 week
• N-P-K: 0-30-27
• Includes a measuring scoop

Green House Powder Feeding Booster is a balanced supplement to the base flowering fertiliser. Liebig's law (Liebig barrel) is observed – plant development is determined not by nutrients that are abundant, but by those required in small doses. For this reason, in addition to the main phosphorus and potassium, micronutrients have also been added, without which the main elements cannot be fully absorbed. This makes this growth booster exceptionally effective.

Directions for use:

Apply during flowering together with a base flowering fertiliser GH Powder Feeding short flowering or GH Powder Feeding long flowering or GH Power Feeding Hybrids

• Soil application – dissolve the recommended dose in the irrigation water. Stir vigorously for 2-3 minutes. Apply the fertiliser with every second watering.
• Hydroponics / Coco – dissolve the recommended dose in the irrigation water. Stir vigorously for 2-3 minutes. Use the nutrient solution with every watering.

Application rates: 

Recommendations and advice:

• Stop using the fertiliser 10 days before harvesting.
• Fertiliser doses are calculated for dissolving in water with EC=0.0
• The resulting solution can be stored for up to 7 days at room temperature in the dark (it maintains stable pH and EC values)
• The colour of the solution may change when exposed to sunlight
• Recommended solution pH during flowering: 5,8-6,5

In addition to the main NPK components, it also contains: magnesium (Mg), boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn)

Application schedules:

• Soil
• Coco
• Rockwool 
• Simplified (Keep it simple!)

Green House Powder Feeding Hybrids is a concentrated powder fertiliser for the growth and flowering stages, suitable for hybrid plants. Its formula includes all essential micronutrients. The increased magnesium (Mg) content and added sulphates help improve yields in hybrid varieties. They also support the accumulation of essential oils, terpenes and flavonoids in plants. Suitable for the entire cultivation period.

For better results, combine with GH Powder Feeding Grow and GH Powder Feeding Booster

• Especially suitable for hydroponic growing
• Easy to use, store and transport
• Longer shelf life than liquid fertilisers
• The prepared solution remains usable for up to 1 week
• N-P-K: 15-7-22
• Includes a measuring scoop

Directions for use:

• Soil - dissolve the recommended dose in the watering water. Stir vigorously for 2–3 minutes. Apply the fertiliser with every second watering.
• Hydroponics / Coco - dissolve the recommended dose in irrigation water. Stir vigorously for 2-3 minutes. Use the nutrient solution with every watering.

Application rates:

• Young plants: 2.5-7 g / 10 L water
• Growth/flowering: 7-10 g / 10 L water

Recommendations and advice:

• Stop using the fertiliser 10 days before harvesting.
• Fertiliser doses are calculated for dissolving in water with EC=0.0
• The resulting solution can be stored for up to 7 days at room temperature in the dark (it maintains stable pH and EC values)
• The colour of the solution may change when exposed to sunlight
• Recommended solution pH: during growth 5,5-6; during flowering 6-6,5

In addition to the main NPK components, it also contains: magnesium (Mg), boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn)

Application schedules:

• Soil
• Coco
• Rockwool 
• Simplified (Keep it simple!)

Green House Powder Feeding Short Flowering is a concentrated powdered fertiliser for the growth and flowering stages, suitable for plants with a short flowering period. Its formula includes all necessary micronutrients and a higher amount of readily available potassium (K), needed to achieve an excellent yield even with a shorter flowering period. It is suitable for the entire growing cycle.

For better results, combine with GH Powder Feeding Grow and GH Powder Feeding Booster

• Easy to use, store and transport
• Longer shelf life than liquid fertilisers
• The prepared solution remains usable for up to 1 week
• N-P-K: 16-6-26
• Includes a measuring scoop

Directions for use:

• Soil - dissolve the recommended dose in irrigation water. Stir vigorously for 2-3 minutes. Apply the fertiliser with every second watering.
• Hydroponics / Coco - dissolve the recommended dose in irrigation water. Stir vigorously for 2-3 minutes. Use the nutrient solution with every watering.

Application rates:

• Young plants: 2.5-7 g / 10 L water
• Growth/flowering: 7-10 g / 10 L water

Recommendations and advice:

• Stop using the fertiliser 10 days before harvesting.
• Fertiliser doses are calculated for dissolving in water with EC=0.0
• The resulting solution can be stored for up to 7 days at room temperature in the dark (it maintains stable pH and EC values)
• The colour of the solution may change when exposed to sunlight
• Recommended solution pH: during growth 5,5-6; during flowering 6-6,5

In addition to the main NPK components, it also contains: magnesium (Mg), boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn)

Application schedules:

• Soil
• Coco
• Rockwool 
• Simplified (Keep it simple!)

GH Powder Feeding Calcium is a highly concentrated calcium supplement, specially created to support healthy plant growth. Calcium is an important micronutrient that plays a key role in cell-wall development and supports the transport of other nutrients within the plant.

GH Powder Feeding Calcium can be used in both hydroponic systems and traditional soil media. Easy to mix and apply, this product provides the required calcium dose to prevent deficiency symptoms and support normal cell processes. The product is suitable for all growth stages, integrating seamlessly into your current feeding plan. With GH Powder Feeding Calcium, you will notice improved plant health and vitality, leading to better harvests and product quality.

Green House Feeding CalMag is a high-quality water-soluble mineral fertiliser designed to prevent and correct calcium and magnesium deficiencies in all plant types. The formula contains nitrogen, calcium and magnesium in an easily absorbed form and is ideal for use with soft water, reverse-osmosis (RO) water, rainwater, as well as in hydroponic, coco and soil growing. Thanks to its high purity, the product contains no chlorine, sodium or heavy metals.

Green House Feeding CalMag is a professional mineral supplement developed to provide optimal amounts of calcium and magnesium – two vital elements for proper plant development. Calcium contributes to the formation of strong cell walls and stimulates the development of roots and new tissue, while magnesium is a key component of chlorophyll and plays a vital role in photosynthesis.

The product is particularly suitable when using reverse-osmosis (RO) water, rainwater or very soft water, where the natural calcium and magnesium content is insufficient. Adding CalMag restores the mineral balance and prevents typical symptoms such as interveinal chlorosis, necrotic spots, deformed leaves and stunted growth.

Thanks to its 100% water-soluble formula, nutrients become immediately available to plants. CalMag can be used through fertigation, hydroponic systems or foliar application, and is compatible with all main Green House Feeding mineral fertilisers – Hybrids, Short Flowering, Long Flowering and Booster – as well as nutrient programmes from other manufacturers.

Composition (EC fertiliser):

✔️ Total nitrogen (N): 13.5%

• Nitrate nitrogen (NO₃): 13.1%
• Ammoniacal nitrogen (NH₄): 0.4%

✔️ Calcium oxide (CaO): 16.7% (water-soluble)

✔️ Magnesium oxide (MgO): 6.0% (water-soluble)

✔️ EC at 1 g/L: 1.2 mS/cm

✔️ Does not contain:

• Chlorine
• Sodium
• Heavy metals

Benefits

✔️ Prevents and corrects calcium and magnesium deficiency

✔️ Suitable for reverse-osmosis (RO) water and rainwater

✔️ Improves cell-wall strength

✔️ Stimulates the development of a strong root system

✔️ Improves photosynthesis and chlorophyll formation

✔️ Supports the formation of healthy flowers and quality fruit

✔️ Ensures rapid absorption thanks to high solubility

✔️ Compatible with most mineral nutrition programmes

✔️ Can be used alone or with fertilisers from other manufacturers

✔️ Contains no chlorine, sodium or heavy metals

Application

Suitable for:

• Vegetable crops

• Fruit trees

• Flowers

• Ornamental plants

• Hydroponic systems

• Coco substrates

• Soil growing

• Fertigation

• Foliar feeding

• Professional and hobby growing

📋 Instructions for use

Base dosage

✔️ 0.1 – 0.5 g per 1 litre of water

For soft water (RO / rainwater)

✔️ 0.5 g/L water (about 0.6 EC)

For hard water or rich soil

✔️ 0.2 g/L, 1–2 times per week (as needed)

Foliar application

✔️ 0.2 g/L, every 10 days, only in the event of confirmed calcium or magnesium deficiency.

For automatic dosing systems

✔️ Preparation of concentrate: 10–15 kg product per 100 litres of water for systems such as Dosatron, Netafim and others.

⚠️ Important

• Do not mix Green House Feeding CalMag with other calcium supplements.
• When using the Green House Feeding programme, you can stop using CalMag around the 6th week of flowering and switch to GHF Calcium Chelate if you wish to continue supplying calcium without additional nitrogen.

💡 Tip from Urban Botaniks: If you use a reverse-osmosis (RO) system, Green House Feeding CalMag should be the first addition to the water before the other fertilisers. This will restore the required calcium and magnesium content and provide an optimal environment for the absorption of all other nutrients. 🌱