with Daisy. Y'all are trying to reinvent the wheel. Use the best potting soil available for houseplants. Determining your type of garden soil is easy. There are several simple ways to determine that at home. Compost improves all soils. Use low number fertilizers for both house plants and garden plants and use at half strength for houseplants. And then if you have problems, send a soil sample or plant sample in to your local extension agent for analysis. In many states this is a free service. Remember, K.I.S.S !