Doug Kanter wrote:


Without a soil analysis, "rich and fertile" don't mean much. But, even if
the nutrient balance was perfect for a given plant, you'd still need to
continue adding to the soil over a period of time. This could mean adding
compost, or mulches which contribute nutrients as they decompose. The soil
is not a static environment.


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Fair enough. Then maybe a better question would be how long does it
take a plant to deplete the nutrients in the soil?

Take for instance some fast growing house plant, in a pot, and with new
potting soil. This plant gets plenty of sun. How long before it needs
fertilizer? Without specifics and details it's probably difficult to
say. But in general, how long before the soil needs fertilizer? Weeks,
months, years?

Thanks.