PANEL 1411-P07 Humidity is a named Grail class: 102 records, mostly tropical foliage EVIDENCE Monstera fenestration linked to light hours, not age GRAIL 4,889 verified diagnoses and counting STUDY Root rot is the largest named class in Grail (214 records) NEW Snake plant rot rescue protocol updated DATA 4,272 Grail records across 738 species PANEL 1411-P07 Humidity is a named Grail class: 102 records, mostly tropical foliage EVIDENCE Monstera fenestration linked to light hours, not age GRAIL 4,889 verified diagnoses and counting STUDY Root rot is the largest named class in Grail (214 records) NEW Snake plant rot rescue protocol updated DATA 4,272 Grail records across 738 species

Free Interactive Tool

Plant Matchmaker

Answer 5 quick questions about your space and lifestyle. Get compatibility-scored plant recommendations backed by real diagnostic data.

Built on 4,889 verified diagnoses 738 cataloged species Free to use

Plant Matchmaker

Find your perfect plant companions

Question 1 of 50% complete

How much natural light does your space get?
🏛️

How this tool works

Methodology, data sources & the Building 1411 apparatus

Every recommendation from this tool is derived from the Plant Grail Knowledge Base — a structured dataset of 4,889 verified diagnoses across 738 plant species, distilled from 4,272 raw cases analyzed during 2024–2025.

Cases are sourced from community-reported outcomes, horticultural research literature, and controlled grow-room observations. Each diagnosis undergoes multi-source verification before entering the knowledge base. Confidence scores reflect the strength of evidence supporting each conclusion.

Building 1411 Research Apparatus · PlantGrail.com · Updated weekly

✦ More Tools

🔬

Plant Diagnostic

Symptom-based → ranked causes

Try it → ☀️

Light Meter

Test your space in 4 questions

Try it → 💧

Watering Schedule

Personalized watering intervals

Try it → 🍃

Monstera Scanner

Species-specific diagnosis

Try it →
View all tools →

Tools diagnose. Mastery Packs cure.

Our free tools help you identify the problem. Mastery Packs give you the full protocol — prevention calendars, rescue flowcharts, and species-specific deep dives built from the same dataset.

Browse Mastery Packs →