Fertilizers; plant food; plant growth nutrients; plant growth nutrients containing plant flavor enhancers; plant nutrients for hydroponic and soil-cultivated plants; plant growth regulating preparations; plant growth nutrients for hydrogardens and indoor container gardens; soil and water conditioners for agricultural, horticultural and domestic use; organic plant nutrients and supplements, namely, soil amendments; horticultural chemicals for use in gardening, namely, chemicals to raise pH levels, chemicals to lower pH levels, pH indicator solutions; growing media for plants; soils, namely, potting soil and planting soil; hydroponic growing media for plants; substrates in the nature of expanded-clay soils for hydroponic plant growing; plant growing kits comprised primarily of seed and plant growing media plugs for use with growing kits including growing trays and domes