Azomite

OMRI® Listed . Has been shown to improve root systems, increase size and yield of fruits and vegetables and general plant vigor in a variety of applications; from gardens and pastures to orchards and lawns. Azomite contains 67 trace minerals to help mineralize nutrient-depleted soils. It’s also excellent for coating seeds for maximum germination and initial growth. Apply directly or with compost, mulch, manures, or fertilizers. 100% naturally derived Application Rate:
Garden Soil: 10 lb per 150 sq ft
Shrubs, Grapes, and Roses: 1/2 to 3/4 lb per mature plant.
Container Pots: 1/2 tbsp per 1 gal soil
Spread it around the root zone and rake or water it in.