(FULL METAL) Cannabis Nutrient Cal-Mag-S Deficiency Chart — Plant Care Diagnostic Poster

This heavy duty, full-metal Secondary Macronutrient Deficiency Sign is your high tech quick-reference guide for identifying and solving Calcium (Ca), Magnesium (Mg), and Sulfur (S) issues before they throttle your yield. Designed with a sleek, 16-bit retro-arcade interface, this chart uses real cannabis leaf photography to break down nutrient problems across three critical phases:

• Early Stage – Catch twisted new growth (Ca), old-growth interveinal chlorosis (Mg), or uniform yellowing (S) the moment it starts.
• Mid Stage – Quickly identify progressing symptoms like necrotic spotting, bronzing, curling, and pale stems.
• Late Stage – Recognize severe stress markers including apical die-back, extreme leaf drop, and bleached stunting.

Because it’s printed on premium, durable metal, this sign is perfect for the high-humidity, high VPD environment of your grow tent or mixing station. It won't warp, tear, or degrade when you're dialing in your nutrient runs. The bottom command panel provides the core functions and targeted solutions for each macronutrient, helping you dial in your Cal Mag and Epsom salt applications with total precision.

Framed by the classic astronaut and a reminder that "Growing is an Art, Not a Recipe..."

Keep on growing! O_O

Product features

- 100% white aluminum composite: lightweight, rigid, and durable

- Matte finish: single-side full-color print with low glare

- Included mounting kit: one mounting block, metal plate, and double-sided tape

- Indoor use; customer assembly required: hanging block must be assembled by buyer

Care instructions

- Use non-abrasive, non-ammonium based products for cleaning. Dish soap with warm water is only recommended for spot cleaning.