Orchid Culture - Watering, Water Quality and Fertilizer
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Choose Your Fertilizer Based on Water Quality, Sue Bottom, SAOS
Water Quality and Fertilizer in St. Johns County, Sue Bottom, SAOS
Soluble Salts, Sue Bottom, SAOS
Rain Collection Solution, Linda Stewart, SAOS
Reverse Osmosis Water, James Arnold, JOS
Are pH Checks Necessary, Harry McElroy, SAOS
Citric Acid for High Alkalinity Waters, Sue Bottom
Alkaline Well Water and Fertilizer, Sue Bottom, SAOS
Peters Complete Guide to Fertilizer Selection
You can download a selection guide
with lots of detailed information about their fertilizer. Consider adding supplemental magnesium in the form of Epsom salts with your fertilizer.
- For low to moderate alkalinity water or if you grow in a highly organic mix like bark or coconut, use a Cal Mag fertilizer (like Peters 17-3-17 Peat Lite Neutral Cal Mag or 15-5-15 Cal Mag fertilizer).
- For high alkalinity water from our shallow wells, use an acid generating fertilizer and Epsom salts (like 20-20-20 or 20-10-20 available from retail outlets; or Peters Excel 21-5-20 Multi Purpose from horticultural sources; Peters 18-8-17 Peat Lite High Mag Special would be ideal but is not available in Florida.)