Volcanic ash contains a high concentration of minerals that enhance plant growth, including

• Potassium (K)– Supports photosynthesisand enhances flavor development in tea leaves.
• Phosphorus (P)– Vital for root development and energy transfer, boosting plant resilience.
• Magnesium (Mg)– A key component of chlorophyll, increasing the vibrant green color of matcha.
• Calcium (Ca)– Strengthens cell walls, improving leaf structure and longevity.
• Iron (Fe)– Aids in enzyme activation, supporting plant metabolism and nutrient absorption.

The light, porous structure of volcanic ash allows it to:

• Retain moisture without waterlogging, creating the perfect balance of hydration for tea plants.
• Improve aeration, ensuring roots receive optimal oxygen levels, enhancing growth

• Volcanic soil tends to be slightly acidic, which is ideal for tea cultivation.
• The acidity helps unlock micronutrients like manganese and zinc, making them more bioavailable to plants.

Sakurajima is an active volcano, meaning its ash is continuously enriching the soil, providing fresh minerals that keep the land fertile.

• The combination of rich minerals, moisture retention, and optimal acidity contributes to the high L-theanine and catechin content in shade-grown matcha.
• Results in a smoother, umami-rich flavor with enhanced health benefits.