Thank you so much for your kind comment. Regarding humic acid: I am trying to spread knowledge about the wonders of humic acid as a soil amendment to the public hoping that will produce a demand. The great value of humic acid is that it releases nutrients already existing in soil. It is also an amazing planting fluid causing a proliferation of roots that boggles the mind. If you attended a lecture of mine on winter crops you perhaps saw a slide of a Brussels sprouts plant with a thick mass of roots that I grew with the aid of a product called “Roots” that contained humic acid. (I had pulled it up so I could photograph the roots on the plant.) Once there is a steady demand for humic acid we will get more humic acid available locally in pure form. Now we have many products containing it, but occasionally I have been able to buy a bag or bottle of it at a local nursery store.

One product containing humic acid is John and Bob’s. This is expensive but is available at many local nurseries and comes in pelletized form. Follow package directions. You do not need to apply a lot of it to see remarkable results. (Google: John and Bob’s on the Internet; I also recommend John and Bob’s in my new organic book.)

The best and easiest way to find dry or bottled liquid humic acid in your area is to go to a nursery that specializes in products for organic gardeners and read the labels on the products. Here are some nurseries in Southern California that carry products containing humic acid: Grangetto’s Farm and Garden Supplies near Rancho Santa Fe, Andersons Nurseries in San Diego County, Cedros Gardens in Solana Beach, and Rogers Nursery in Corona Del Mar, Armstrong Garden Centers in West Los Angeles, Belfontaine Nursery in Pasadena, Can Do It Centers throughout California, Goleta Organic Nursery near Santa Barbara, and others.

Internet searches can also help you to find humic acid in bulk. Mesa Verde Resources is one company manufacturing humic acid as a soluble powder and also as a liquid. However the quantities are quite large. There are others also. Chinese companies sell humic acid much cheaper than we do in the USA but I don’t think gardeners are going to want to send to China for humic acid! Who knows though? Perhaps a garden club could order a delivery of humic acid from a source such as Mesa Verde and then share it among their members.

I have not found a source.
Do you have a source or supplier in the San diego area or oneline?
Thanks!
Linda Ryan
PS Enjoyed your MAster Gardener presentation so much this fall.