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Former Intern Starts Her Own Rock Dust Business


Have you heard about rock dust fertilizer? My name is Macy Horton and I am a guest blogger here to tell you about its wonders!  I was an intern at Green City Growers last summer, and working with the GCG team was one of the most formative experiences of my life. The experience I had there gave me the courage, knowledge, and energy to start a venture of my own! That’s a lot more than most people can say for their internship experience.

This summer I have started a business selling rock dust fertilizer, and this week is myWEBSITE LAUNCH. My fertilizer is called Granite Flour and it is a trace mineral fertilizer consisting of pure granite dust (a by-product of stonework companies). When incorporated with a soil mixture, this fertilizer slowly releases over 50 trace minerals which work with the soil to nourish your plants with the nutrients they need to grow faster and stronger.  This granite flour is not only beneficial to vegetable gardens, but also flower beds, lawns, shrubs, and plants of any kind! Just a few minerals include: Phosphorus, Potassium, Calcium, Magnesium, Boron, Iron, Manganese, Zinc, and Silica.

The packaging is 100% compostable, and designed for convenience.  Application is easy with my cardboard tube packaging because the measurements you need for application are shown inside of the cap. The packaging holds 2lbs of the product, which is enough dust for a 100 square foot garden or about 35 gallon sized potted plants.  It is recommended that this product be incorporated once a year to enhance long term soil health.

My website is www.rockdustsoilsolutions.com and there you can learn more about rock dust, see who is using it, and order yours today! Green City Growers uses rock dust in their raised bed gardens because they understand the necessity of replenishing the soil’s micronutrients! GCG is inspiring a movement beyond rooftop gardening that includes education, exploration, and the health of the land, plants, and people!

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