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The Premier Organic Humic Supplement
Royal Black is OMRI Listed for Organic Use.
Introducing Royal Black, the organic humic supplement designed to enhance your plant's growth naturally. Often, growers ask, "What is humic acid?" Humic acid is a vital component that assists in chelating essential nutrients such as magnesium, calcium, and iron, ensuring they're readily available to your plants.
Royal Black, enriched with humic acid for plants, ensures that your plants receive these nutrients more efficiently. It acts as a soil conditioner, revitalizing the soil and coco, and ensuring that your plants have the best environment for growth.
Beyond mere nutrient transportation, Royal Black also stimulates root and enzymatic functions, bolsters seedling and clone vitality, and optimizes nutrient and vitamin utilization.
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AVAILABLE SIZES

Key Features:
- Potassium Silicate Enrichment: Fortified with a hint of potassium silicate, Royal Black offers added benefits like reinforced cell walls and augmented chlorophyll production.
- No Need for Extras: With Royal Black, there's no need to invest in additional silicon products. You get all-in-one!
- Versatile Usage: Whether you're using soil or coco, Royal Black integrates seamlessly. Plus, it's compatible with any branded fertilizer or additive.
- Pot Pre-treatment: Especially beneficial for coco users (which lacks the humate matter found in soil), pre-treating pots with Royal Black sets your plants on a path to success.
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GUARANTEED ANALYSIS

Customer Reviews
Disclaimer
The values provided on these feeding charts are meant as a general growing guide.Results may vary based on such factors as genetics, environment, and water quality.It is up to the end user to make the necessary adjustments based upon their individual situation.
Fine-Tune your Feed - Click To Explore Our Nutrient Calculator
FEED SCHEDULES AND GROW GUIDES |
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FUTURE HARVEST 8 WEEK FEED SCHEDULE: SOIL (mL per gallon) An 8 week liquid feed schedule used for: Soil, COCO, and Soil-less growing mediums. Click here to Download PDF |
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FUTURE HARVEST 8 WEEK FEED SCHEDULE: HYDRO (mL per gallon) An 8 week liquid feed schedule used for: a hydroponic growing system. Click here to Download PDF |
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FUTURE HARVEST 8 WEEK POWDER FEED SCHEDULE: SOIL (grams per gallon) An 8 week powder feed schedule used for: Soil, COCO, and Soil-less growing mediums. Click here to Download PDF |
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FUTURE HARVEST 8 WEEK POWDER FEED SCHEDULE: SOIL (tsp per gallon) An 8 week powder feed schedule used for: Soil, COCO, and Soil-less growing mediums. Click here to Download PDF |
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EASY PLUS SERIES APPLICATION GUIDE The Easy Plus Series application guide. Used for: Soil, COCO, and Soil-less growing mediums. Click here to Download PDF |
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EASY PLUS SERIES GROW GUIDE An easy to understand grow guide on using our Easy Plus Series powders. Click here to Download PDF |
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FUTURE HARVEST 8 WEEK AUTO-FLOWER FEED SCHEDULE An 8 week liquid feed schedule specifically designed for auto-flowering plants. Click here to Download PDF |
Take a look at our Media Kit. Loaded with all of our product photos, marketing materials, and our latest Product Catalogue!
If you are having troubles understanding the Feed Schedules, check out this Blog Article!

SAFETY DATA SHEETS / CERTIFICATES OF ANALYSIS
SDS | COA | LABEL / PDS | |
HOLLAND SECRET - MICRO | EN / FR | COA | LABEL / PDS |
HOLLAND SECRET - GROW | EN / FR | COA | LABEL / PDS |
HOLLAND SECRET - BLOOM | EN / FR | COA | LABEL / PDS |
CALNESIUM
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EN / FR | COA | LABEL / PDS |
PLANTACILLIN
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EN / FR | COA | LABEL / PDS |
HARD WATER MICRO
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EN / FR | COA | LABEL / PDS |
EASY GROW PLUS | EN / FR | COA | LABEL / PDS |
EASY BLOOM PLUS | EN / FR | COA | LABEL / PDS |
SUPER B+ | EN / FR | COA | LABEL / PDS |
ROYAL GOLD | EN / FR | COA | LABEL / PDS |
ROYAL BLACK | EN / FR | COA | LABEL / PDS |
PROP-O-GATOR | EN / FR | COA | LABEL / PDS |
CARBO BLAST | EN / FR | COA | LABEL / PDS |
BUD START | EN / FR | COA | LABEL / PDS |
TON O BUD | EN / FR | COA | LABEL / PDS |
BUD BOOM | EN / FR | COA | LABEL / PDS |
SILICA UP | EN / FR | COA | LABEL / PDS |
pH UP | EN / FR | COA | LABEL / PDS |
pH DOWN | EN / FR | COA | LABEL / PDS |
ORGANICAL MAGIC | EN / FR | LABEL / PDS | |
SURGE PLUS | EN / FR | COA | LABEL / PDS |
CARBO BLAST POWDER | EN / FR | LABEL / PDS | |
BUD START POWDER | EN / FR | LABEL / PDS | |
TON O BUD POWDER | EN / FR | LABEL / PDS | |
BUD BOOM POWDER | EN / FR | LABEL / PDS | |
PLANT FLUSH | EN / FR | LABEL / PDS | |
CITRIC DOWN | EN | LABEL / PDS | |
ISOPROPANOL 99% | EN | LABEL | |
H2O2 29% | EN | LABEL / PDS | |
SUCK IT UP | EN | LABEL | |
VEG BOOM PLUS | EN | LABEL | |
NUTRADIP pH4 | EN | LABEL | |
NUTRADIP pH7 | EN | LABEL | |
NUTRADIP 1000PPM | EN | LABEL | |
VGC - COMMON | EN | LABEL | |
VGC - GROW | EN | LABEL | |
VGC - BLOOM | EN | LABEL |