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Organics Rx® Plant Food, Kelp

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This all-purpose organic plant food encourages strong root growth so plants are able to take in more nutrients and water, increasing fruit and vegetable yields up to 40 percent. Liquid fertilizer acts faster than dry plant foods so plants will benefit shortly after application. Odorless kelp-based plant food is completely organic and contains no animal by-products.

  • Promotes strong roots for maximum nutrient and water intake.
  • Odorless, 100% organic, kelp-derived formula contains no animal by-products.
  • Liquid form delivers nutrients to plants quickly.
  • Regular use may increase fruit and vegetable yields by up to 40 percent.
  • May be used with Organix RX® Tomato or Organix RX® Veggie Food for higher fruit production.
  • Safe for use around pets.
  • 15 oz.
Use & Care


  • Mix 1-2 tablespoons per gallon of water.
  • For faster results, apply three times per week.

Shipping Information

This item is shipped from our warehouse by UPS to arrive within five business days of our receiving your order.

Shipping Rates

The shipping rate varies depending on your order total and shipping destination. View Shipping Options and Charges.

Rush Delivery

For an additional charge of $15 per address, we can rush delivery to most destinations. This service is not available for some oversize items, items shipped directly from the supplier (including perishable and custom-manufactured items), out-of-stock items and items to be shipped outside the contiguous 48 states.

Return Policy

At Williams-Sonoma, we take great pride in the quality and craftsmanship of our products. Attention to design, materials, safety and construction are our priority. Upon receipt, please inspect your purchase and notify us of any damage; we will arrange for a prompt replacement.

If within 30 days, you are dissatisfied for any reason, you may return your purchase for a refund of the merchandise value. An original receipt or gift receipt is required for all returns and exchanges. Returns with a gift receipt will be refunded in the form of a Merchandise Credit for the amount indicated on the gift receipt. Returns with original receipt will be refunded in the original form of payment, cash and check refunds over $100 will be issued as a company check (may take 14 business days from time of request).

We cannot accept returns on monogrammed, personalized, special-order items, custom upholstery, items shipped direct from the vendor, or on items damaged through normal wear and tear. Final sale items ending in .97 or .99 cannot be returned.

For returns of items purchased from your Williams-Sonoma Gift Registry, we will gladly provide a refund or exchange for the merchandise within 90 days of your event or within 90 days of purchase, whichever date is later. View Full Return Policy.