Organic Fertilizing - Knowledgebase Question

Watertown, MA
Question by purplebz
November 1, 2000
I am very insistent on only growing an organic garden, however I have never fertilized! I would love if you could recommend some fertilizers I could use for my house plants? Also in terms of the garden outdoors, I have a compost pile, but am not sure when to spread it into the garden? I guess I am just looking for some organic gardening tips. I should add that the more simple the better. I am just getting involoved in gardening and don't want to be intimiated by the process.


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Answer from NGA
November 1, 2000

0

at least 4 inches to the side of the plant to prevent burning roots.

Here's a little background on fertilizers for your info: You probably noticed that fertilizers have 3 numbers on the container. These numbers refer to the percentage of nitrogen (N), phosphorous (P), and potassium (K) in the fertilizer. These 3 elements are referred to as macronutrients because plants need them in fairly large (i.e., macro) amounts to thrive. How these elements interact is complicated but in general terms, nitrogen produces lush green growth, phosphorous helps strengthen stems and produce flowers (and eventually fruit), and potassium keeps the root system healthy.

Here are some organic sources of nutrients:
Nitrogen: alfalfa meal, blood meal, coffee grounds, cottonseed meal, fish emulsion, seabird guano.
Phosphorous: bone meal, rock phosphate
Potassium: greensand, seaweed, kelp

After planting, add a 1-2 inch layer of mulch. Mulch is great to help retain soil moisture, reduce weeds, and as it breaks down it provides nutrients to the soil. Any organic matter can be used as mulch. Try compost, bark, wood chips, straw, or pine needles.

For your houseplants, assuming they are foliage plants, a nitrogen source is most important. Good luck with your gardening! at least 4 inches to the side of the plant to prevent burning roots.

Here's a little background on fertilizers for your info: You probably noticed that fertilizers have 3 numbers on the container. These numbers refer to the percentage of nitrogen (N), phosphorous (P), and potassium (K) in the fertilizer. These 3 elements are referred to as macronutrients because plants need them in fairly large (i.e., macro) amounts to thrive. How these elements interact is complicated but in general terms, nitrogen produces lush green growth, phosphorous helps strengthen stems and produce flowers (and eventually fruit), and potassium keeps the root system healthy.

Here are some organic sources of nutrients:
Nitrogen: alfalfa meal, blood meal, coffee grounds, cottonseed meal, fish emulsion, seabird guano.
Phosphorous: bone meal, rock phosphate
Potassium: greensand, seaweed, kelp

After planting, add a 1-2 inch layer of mulch. Mulch is great to help retain soil moisture, reduce weeds, and as it breaks down it provides nutrients to the soil. Any organic matter can be used as mulch. Try compost, bark, wood chips, straw, or pine needles.

For your houseplants, assuming they are foliage plants, a nitrogen source is most important. Good luck with your gardening!

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