The Best Hawaiian Soil Mix

Hawaii does have access to many of my favorite soil mix elements, however, at a cost. So, I developed this mix specifically for folks living in Hawaii exposed to our economically limited choices. While it does not provide a 5-star dining experience for your plants, it adequately covers all their needs and desires in order to grow into large healthy specimens.

1 Bag of Scott's Brand Topsoil

Available from City Mill and Home Depot for around $4 for a .75 cubic foot bag
2 Gallons of Worm Castings

I buy the G&B Organics brand in 20 quart bags wholesale from Simplot, however any brand should suffice.
2 Gallons of Sunshine #4 Mix

I also get the Sunshine #4 mix wholesale from Simplot. This product is largely available at most grow stores and nurseries.
1/2 Cup Nitrogen Rich Bat Guano

You can buy the guano at most hydroponics grow shops in Hawaii or online.
1/4 Cup "Rock Phos"

You can buy the phosphoros rich pulverized cave rock extract at most hydroponics grow shops in Hawaii or online.
1/4 Cup Seabird Guano

You can buy seabird guano at most garden stores, hydroponics grow shops in Hawaii or online.
1/3 cup Dolomite Lime

I suggest buying the pulverized dolomite lime online (I used Amazon); I could not find this in Hawaii.

This will produce approximately 10 gallons of soil blend. You can increase the fertilizer ingredients for older plants and remove them if using the blend to start seeds or seedlings.

Here is a video using my tote method to mix a double batch (20 gallons).