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The Josephine Porter Institute

Biodynamic Gold Potentized Horn Silica (BD #501g) BD Spray Preparation

Biodynamic Gold Potentized Horn Silica (BD #501g) BD Spray Preparation

Regular price $4.75 USD
Regular price Sale price $4.75 USD
Sale Sold Out

BD#501g should be been used after having used BD#500. It is advisable that one unit of 501 be used per acre per year.

Horn silica (501g) stimulates photosynthesis and the ripening process, regulates leaf growth, enhances flavor and storage quality. Our gold-potentized version of 501 contains 24k gold that has been potentized homeopathically. Homeopathic gold brings more of the influence of the alchemical Sun to bear in the garden, bringing more light into the garden, enhancing ripening. 

In some biodynamic experiments, gold-potentized water seems to mitigate the negative influence of solar eclipses. We recommend 501g for bringing more of the balanced solar influence into play when there are inauspicious astronomical aspects in the sky (such as blackout times), especially inauspicious times in relation to the Sun. It is generally advisable to stir before a blackout time.

When seeds are treated with gold-potentized water and germinated during a solar eclipse, they do not show the same deleterious effects as other seeds without the enhancement with gold.

When the Sun is obscured in the sky, we can bring its influence into play by introducing gold between the plant and the obscuring constellation. 

How to use BD #501g Stir vigorously for one hour in sufficient water to meet your application requirements. Apply immediately to foliage. Apply periodically during the growing season. One unit is enough for one acre when stirred properly. Spray in the early morning.

For additional information, visit: JPI Preparation Articles ; Instruction Handouts

Additional Article: Brief Instructions: 500, 501, 508


How to use


Our current shipping policy is as follows: all orders will be shipped via USPS within two business days after payment is received, unless different shipping instructions are received at the time the order is placed.

Final shipping cost depends on the amounts ordered, proper shipping container size, as well as destination shipped to. If your order is returned due to an incorrect shipping address you will be responsible for the postage to reship the package. 


If you have any questions or concerns please email us at contact our office at (540) 745-7030. Thank you for your ongoing support.

Return policy

We offer a Full Money Back Guarantee on all our preparation products when returned within 30 days. However, we must advise that all publication (books, DVDs, etc.) sales are final. All refunds will be provided as a credit to the credit card used at the time of purchase within five (5) business days upon receipt of the returned merchandise. Return shipping costs are your responsibility. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.


To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

Additional non-returnable items:

  • Gift cards
  • Downloadable software products
  • Some health and personal care items

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer. There are certain situations where only partial refunds are granted: (if applicable)

  • Book with obvious signs of use
  • CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened.
  • Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
  • Any item that is returned more than 30 days after delivery

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or Missing Refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.

Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact us at

Sale items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Exchanges (if applicable)

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at and send your item to: 652 Thompson Rd, Floyd, VA, 24091, United States.


If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.


To return your product, you should mail your product to: 652 Thompson Rd, Floyd, VA, 24091, United States.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

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Customer Reviews

Based on 1 review
Gerlinde Smith
Great BD Product

Up until now, I used BD 501, the addition of the gold is wonderful for the plants. All of them look strong and vibrant.