Every grower tool in one place

Tell it what you want in plain English and it picks 5 perfect strains from 2,000+ with personalized match scores, drawbacks, and reasons. The flagship tool — predictive, honest, and gets smarter with every session.

Upload a photo of a sick plant and get an instant diagnosis with confidence score, severity, specific fix steps, recovery timeline, and nutrient recommendations. Identifies nutrient deficiencies, pests, water issues, light stress, pH lockout, mold, and more. Includes a follow-up chat to ask plant-specific questions.

Interactive VPD calculator with sliders, circular meter, dynamic chart, and stage-specific climate recipes. Tells you exactly how much to adjust temp + humidity to hit your target VPD. Includes Fix-My-Room with three adjustment paths, risk warnings, and strain recommendations tuned to your environment.

Stage-aware EC and pH targets, watering volume and frequency, dry-back guidance, and climate-adjusted nutrient dosing. Detects salt buildup from runoff EC drift, warns on overfeed / underfeed / pH lockout, and recommends specific products per nutrient line. Save each feed to your Grow Journal.

The intelligence layer of the Royal Grow operating system. Reads your VPD readings, feedings, plant diagnoses, and stage history together. Generates a weekly grow report, surfaces what changed before symptoms appeared, forecasts magnesium demand and salt buildup, and answers grow questions with full context.

Closes the grow loop. Log final yield, bud quality, smoke profile, and difficulty. Get a 100-point Harvest IQ Score, yield analysis vs strain expected, what-worked / what-hurt reasoning from your grow journal, next-strain recommendations tuned to your outcome, and a shareable Harvest Replay link.

Track each grow from germination to harvest. Get stage-specific advice tailored to your strain, capture real outcomes (yield, quality, rating), and feed the data back into your future recommendations.

Your accumulated preferences — top terpenes, strain-type lean, ideal THC range, archetype name, liked + excluded strains. Built automatically from your Royal Strain Finder sessions and grow outcomes.

Your year-end cannabis recap — archetype, top terpene with effect blurb, ideal THC range, best grow, total sessions. Shareable with a public link + dynamic OG image for socials.

The classic 6-step weighted-scoring quiz. Pure algorithm — answer 6 questions and get a deterministic ranking of all 2,000+ strains by fit. Faster than Royal Strain Finder, no free-text nuance.

Stack up to 4 strains side-by-side across THC, CBD, effects, terpenes, difficulty, yield, and price. Useful when you have 2-3 finalists and need to break the tie.

Estimate your harvest weight from strain, environment (indoor/outdoor), tent size, light wattage, and grow technique. Tells you what to expect before you germinate.

Per-stage nutrient feeding schedule based on grow medium (soil / coco / hydro), brand of nutes, and plant count. Avoid burn, lockout, and deficiency.

Browse the full Royal King Seeds catalog of 2,000+ feminized + autoflower cannabis seeds. Filter by category, strain type, or THC range.

Aggregate lab results, grower reports, terpene data, and category breakdowns. The reference hub for serious growers who want the numbers, not the marketing.