What it does: Vitalizes the soil and stimulates root growth. Builds humus, enlivens soil microbial life, and helps ground the plant in the forces of growth and reproduction.
How to use: Stir for one hour. in 3–5 gallons of water, spray out over soil preferably in the afternoon.
Prepared BD 500 stimulates seed germination, root growth, and humus formation. Use when planting, transplanting or turning in cover crops.
This preparation was created by Alex Podolinsky (Australia). In Australian practice, although Prepared 500 was initially used only after two years of application of regular BD 500, further experience now calls for its use from the very beginning of conversion to biodynamic agriculture in virtually every case. This contains all the biodynamic preparations including 500 horn manure, yarrow, chamomile, stinging nettles, oak bark, dandelion, and valerian.
My garden thrived this past year 2025 using Prepared 500P preparation, Barrel Compost, and Horn Silica prep. despite dry weather and heat in the NE USA !! There was nearly a total absence of fungus, and pests. My vegetables were strong and healthy!! Very happy with 500P and all JPI preps. Would highly recommend this prep.
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Pamela Saterdalen
Prepared BD500 Podalinsky
Efficient. I like the result too There is a maintained order in the beds that were prepared last autumn. They are ready for action. Spring prep is efficient and easy. Maybe the elementals are helping too with greater ease. The land feels solid. See able and enjoyable environment. Thank you !
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Gerlinde Smith
Horn Manure is my "workhorse" for the health of my garden.
Ever since I established my garden I have been using Horn Manure. It encourages healthy roots and helps to build up organic matter in the soil, improving its structure and fertility. It makes plants more resilient to stress.
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Amy Phillips
Rip Off
Very disappointed in size compared to cost. Won't be ordering again.
We're sorry you had this experience, though our amounts are clearly labeled on our website. When we shift from thinking of bulk applications to nearly homeopathic doses, this can be an initial impression. But we aren't spreading substances—we are broadcasting living forces, like yeast in a loaf of bread: these biologically dynamic preparations inoculate the soil with beneficial activity that persists not just for a single season but for years. The trick to good bread is not adding MORE yeast, but the right kinds of yeast. Because these are biologically active, you need very little to perform an enormous amount of good for the farm and garden.
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Diane Goldsberry
'Prepared' 500 Horn Manure Preparation (BD #500P - Alex Podolinsky Method) Biodynamic Horn Manure PLUS all Compost Preparations
