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Tips on Organic Fertilizers

February 29th, 2008 · 1 Comment · home gardening tips, organic, organic fertilizer

Organic Fertilizer
Questions & Answers (Q&A)
There is a lot of confusion on what truly can be designated an organic fertilizer. An organic fertilizer contains nutrients that have been derived, in one manner or another, from an organism. As an example, organic fertilizers may be manufactured from cottonseed meal, an emulsion derived from fish, animal manure, sewage sludge, and bone meal or a combination of some or all of the aforementioned items.

Some fertilizers that call themselves organic are made from Urea, which is made from inorganic products hence at best it is a synthetic organic fertilizer.

If a product is sold as a fertilizer in North America, it must state the NPK (nitrogen, phosphorus, potassium) formulation on the package. In order to avoid having to guarantee a NPK of a product, many manufacturers will sell their fertilizers as soil conditioners. A soil conditioner does not have to state the nutrient formulation of the product. One of the reasons that manufactures do not want to state a guaranteed nutrient formulation is that with organic products the nutrient levels vary dramatically from batch to batch. Organic products that are made from sewage sludge and manures will only have small amounts of nutrients present in the formulation.

Some organic fertilizers are fortified in order to bring up the nutrient levels and to allow the manufacturer to maintain a guaranteed level of formulation.

Organic fertilizers work best in moist warm soils as it is the organisms in the soil that breakdown the fertilizer which is what releases the nutrients into the soil. Because an organic fertilizer must be broken down in order for it to provide any nutrients to the soil, organic fertilizers are classified as very slow release and a gardener must determine if a slow release is what any specific plant variety might need.

It is also important to understand the side effects of the organic fertilizer. As an example, cottonseed meal is acidic. If you are growing plants such as azaleas or rhododendrons, an organic fertilizer derived from cottonseed meal may be the exact product you are looking for. The common formulation for cottonseed meal is 7-3-2.

With an organic fertilizer such as blood meal, derived from the blood of cattle, one must be cautious because it has a very high nitrogen content and if not used carefully can easily burn plants.

Organic fertilizers have there place in the garden, but they are no different than synthetic fertilizers in the fact that you must understand the formulation of the product and how it might negatively affect the specific plants that you are trying to enhance.

Read and follow the manufacturers instructions and guidelines before usage!

Renovation Headquarters has a complete section on fertilizers and fertilization. For additional information on Organic Fertilizers.

Renovation Headquarters provides information and advise on a host of home improvement, renovation, D.I.Y., landscaping, and gardening projects.

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Organic Fertilizer Pictures

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Vermi culture or using worms for organic fertilizer
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Organic Fertilizer Videos

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Organic Fertilizer and Pest Control



Organic Fertilizer Question & Answers

Organic Fertilizer Question: 1


Organic Pesticide for Vege Garden?

I just planted a vege garden and its completely organic and natural. I don't want any chemicals or 'blood and bone' fertilizer. Nothing with animal products. Do you know how to make a good organic pesticide that won't kill my garden?

Answer: 1.
Ultimately you want to get to the point of not using any pesticides due to an exquisite balance in your garden eco-system and to do that is to use a few pesticides as possible and start encouraging beneficial insects, amphibians, reptiles and mammals to take up residence in your garden.

Know that all plants can lose 75% to 80% of their foliage and still be perfectly healthy. Also know that 95% of all insects out there are either beneficial or neutral to your garden and only 5% cause severe problems.

That said, be careful which pesticides you use as there are many broad spectrum organic 'cides out there.

Soap spray made by putting 1TBL of dish detergent or better yet Fels Naptha soap into a quart of SOFT water (never use hard water for any sprays as the hardness generally nullifies the sprays). Soap sprays are excellent for controlling soft bodied insects such as aphids but you will have to spray daily through out the season for control and using insects such as ladybugs, green lacewings, etc will get you far better control with no work

Pepper and garlic sprays-these are repellents, not killers. Put 10 crushed hot peppers into a quart of water. let this steep for 2 weeks in the fridge. Strain off the peppers and than mix the pepper solution at a rate of 1TBL pepper solution to a quart of water. You can mix soap in with this to make it stick to the plants better. garlic spray is made by putting 5 to 10 crushed cloves of garlic in a quart of water and doing the same thing you did with the pepper spray. mix at the same rate and you can mix the two together along with soap.

Neem is good, follow the directions on the bottle. Neem works in several ways. It interrupts molting, it is an anti feedant and it kills eggs.

Hand picking, this is really effective for long term control and chemical free. I rely on this method almost more than any other in my 3 acre market garden. there is the ICK factor but if you are going organic you need to get over being skeerd of bugs quickly. Bug-phobias are the result of chemical companies convincing us all that all bugs are bad, need to be feared and that toxic chemicals are the only way to get rid of them. Don't do what the poison makers want, be your own person.

The most effective pest control other than encouraging the beneficial critters to do the work for me is row covers, aka Reemay. Row covers are put over the crops and keep the insects from getting to the plants. They can be diffacault to use at first as there is a learning curve but once you have learned the ropes they are incredibly effective. I have been using them for over 14 years and would not want to garden organically without them.

Now the most important thing for a healthy garden is healthy soil and that means lots of green manures, composts that have manure in them (sorry but animal manure is one of the soil's favorite things to eat and it is very very difficult to have healthy soil with it. it can be done but not without a very good understanding of what goes on in the soil. Check out http://www.soilfoodweb.com) healthy soil leads to healthy plants and healthy plant are not attacked by insects or diseases. Soil is the most important crop any organic grower worth her salt can grow.
Answer: 2.
I've heard that using diluted vinegar in a spray bottle will help ward off pests.
Answer: 3.
Safer soap, for one, they make all kinds of organic sprays and things that doesn't kill your good insects.

organicgardening.com
Answer: 4.
Pyretheum is a gorgeous flower that can be dried and crushed. It is toxic to bugs (and cats, in larger doses so be careful) but it is also photosensitive, iirc, meaning that the sun burns off the poison so that it doesn't harm the butterflies and bees... just the evil night bugs that munch on your veggies.

Do some research because it isn't suitable for all gardens. Some folks find it more trouble than it is worth.
Answer: 5.
I have had great luck with Neem Oil (comes from the Neem tree). Also, a mixture of water, canola oil, lemon dishwashing liquid, and hot chili peppers all blended together. Alternate, and keep at it, organics take more work than artificials.
Answer: 6.
I've found a water based concoction of chilli powder, curry powder, salt and a little washing up liquid to fairly reliable.

The best advice would be to concentrate your efforts on acheiving the healthiest plants as this gives them the best chance of fighting off pests and disease. Ensure you provide the correct conditions for the vegetables you are growing and plant 'companion plants'. Have a google and don't be afraid to spend a good deal of time doing your research. A couple of hours spent now finding out what to do will result in a much heavier harvest of your crops.

Go out of your way to attract wildlife into your veggie area. Lady birds houses take a little effort and they help you out enormously.

Have a read about but be careful of advice...... use what you think is right. That's half the fun of it!!!!!

Good luck
Answer: 7.
start with planting companion plants that ward off bugs - marigolds are the workhorse of companion plants and can be planted throughout your garden.

Organic Fertilizer Question: 2


Are there anyone use 7-7-2 fertilizer?

I found some very affordable organic 7-7-2 fertilizer.I am wondering if it is good for citrus fruit trees?thank you,

Answer: 1.
Hey Cindy,

A lot depends on the Soil pH that you currently have. That has a large concentration of Nitrogen as compared to the Potassium. (NPK, Nitrogen, Phosphorus, Potassium are the 3 numbers quantity in ratio of percentage content).

"Citrus fertilizer management on calcareous soils differs from that on noncalcareous soils because of the effect of soil pH on soil nutrient availability and chemical reactions that affect the loss or fixation of some nutrients. The presence of CaCO3 directly or indirectly affects the chemistry and availability of nitrogen (N), phosphorus (P), magnesium (Mg), potassium (K), manganese (Mn), zinc (Zn), and iron (Fe). The availability of soil copper (Cu) also is affected; however, since the citrus Cu requirement is normally satisfied through foliar sprays of Cu fungicides, ..." 1

In Florida, the soils can approach a pH of 5 and nitrification approaches zero below this. That would not be good, and your fertilizer would help with this. Correcting the pH would be the first step, and getting a soil test at your local county extension office (6 bucks) will tell you for sure.

Nitrogen is very important in citrus trees, so, my guess would be go ahead and use it. One more thing is that you mention ORGANIC. If you are trying to certify a product as grown organically, you need to prove it. There are organic certification programs - but that is another question.
Answer: 2.
Organic fertilizer is fine, if you are not in a rush for color.

In the commercial world down here in Dallas, we use 24-0-0 or 33-0-0 when temp is hot.

The first number is available nitrogen. Larger the first number,
better results.

Do not apply more than 1 lb fert per inch of tree caliper or you will have problems.

Organic Fertilizer Question: 3


Are there anyone use 7-7-2 fertilizer?

I found some very affordable organic 7-7-2 fertilizer.I am wondering if it is good for citrus fruit trees?thank you,

Answer: 1.
A good citrus fertilizer is 8-3-9 or 8-2-10 with 3% magnesium. Sprinkling the fertilizer lightly just outside the dripline is recommended. use just enough that you can see it and apply 3 or 4 times a year. Most citrus also needs micronutrients in addition to fertilizer. Thing to remember is "Cheap fertilizers are not good and good fertilizers are not cheap".

Organic Fertilizer Question: 4


What is the best............????

Type of dry organic fertilizer to use on herbs? It must be OMRI certified. Could you please give me the brand name and price!!! Thank you!!!!!!!

Answer: 1.
it depends where your from, here is a site in usa!
http://www.cleanairgardening.com/chickap...
Answer: 2.
local feed store get manure all organic
there ya go

Organic Fertilizer Question: 5


Bonsai tree fertilizing ?

I have a dwarf ficus bonsai and the owner where i got the tree gave me miracle grow to use 1/2 teaspoon to one gallon and use every 2-4 weeks april-september and every 6-8 weeks in the other months. does this seem good or could it hurt my tree ? His store had no organic fertilizer? Should I use it or notThe tree is about 15 years old,

Answer: 1.
Keep fertilizer to a minium (about 1/2 his recomendation), you don't want your bonsai to become too big. Miraclegrow or plain nitrogen is ok. Try looking for some moss growing in your back yard & transplanting around the base of your tree for an interesting effect.

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1 response so far ↓

  • 1 C Duran // Mar 2, 2008 at 1:37 am

    Thanks for the tips. I grew my garden last year with no fertilizer as I wanted everything to be organic, but maybe I’ll try an organic fertilizer this year.

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