(888) 784-1722

Meet the secondary macronutrients and the micronutrients your plants need

Mar 17, 2013 -
   
  Meet the secondary macronutrients and the micronutrients your plants need
Tricia adds micronutrients to her soil, based on the results of a lab soil test.
 
   

Micronutrients are vitamins for your plants, says Tricia in our new video about secondary macronutrients and the micronutrients.

You know about the major nutrients, N-P-K. Those are the symbols for the building blocks: nitrogen, phosphorus and potassium. They’re represented by the three numbers on the front of fertilizer boxes or bags. For more about them, check out our video here.

With the lesser known micronutrients (like “molybdenum”—if you can spell that you can probably win a Spelling Bee) you’ll need a lab soil test to know if any need to be added to your soil.

Let’s have a quick look at the major mineral nutrients, and then get to know the micronutrients and find out what they do for your plants.

MINERAL NUTRIENTS—DO YOU KNOW THE SECONDARY NUTRIENTS?

Soil has varying amounts of minerals. When it rains, or we irrigate our gardens, the minerals dissolve, and the plant roots absorb the minerals.

Our friends N-P-K are the primary macronutrients.

Also important are the secondary macronutrients:


Calcium builds cell walls. Add it via limestone powder, gypsum, oyster shell, or Calcium 25. Problems caused by low calcium include Blossom End Rot in tomatoes. Before you add calcium, check your soil pH in order to choose the best calcium source for your garden; oyster shell will raise the pH, but gypsum will lower pH.


Magnesium supports chlorophyll production. Add it via dolomite, K-Mag and azomite.


Sulfur builds protein. Sulfur is released when “greens” like vegetable scraps and lawn cuttings decompose. Add it via gypsum, iron sulfate, and sulfur.

MEET THE MICRONUTRIENTS

We say “micro” because plants need only small amounts of them. Sometimes they’re even called “trace elements”. They all have a role to play, though.

Let’s find out what they are, what they do, and how you can add them to your soil.

Boron is a boss (or regulator) of other nutrients. Plants need it for seeds and fruit. Add it via powdered boron.

Copper helps plants reproduce and boosts metabolism in roots.

Chloride is another aid to plant metabolism. 

Iron assists in producing chlorophyll.

Manganese breaks down carbohydrates, cooperating with enzyme systems.

Molybdenum (in addition to being hard to spell) aids nitrogen use by plants.

Zinc helps change carbohydrates into sugars, and it’s in plant growth enzymes too. Add it via zinc oxide, zinc sulfate, and zinc chelate.

PLANT MULTI-VITAMINS FULL OF MICRONUTRIENTS

Want a multi-vitamin for the plants growing in your garden? One that contains many of these micronutrients? Try kelp meal, glacial rock dust, azomite or (for fastest results) liquid kelp.

Now that you know the basics of secondary macronutrients and the micronutrients, go get a lab test on your soil. Once you have the results, use organic fertilizers to add what you lack—and you’ll be on your way to a garden full of healthy vegetables and bountiful harvests.

For more information about nutrients and organic fertilizers, read the Fertilizer Solutions Chart in our Fertilizer catalog, or download the chart as a PDF here.

Secondary macronutrients and the micronutrients are small but essential building blocks for the plants in your organic garden!


Solutions: Mg (Magnesium), S (Sulfur), Ca (Calcium), Trace Minerals, Organic Matter, Corrects Low pH, Corrects High pH

Categories: Soil Test, Soil Test Kit, Soil Testing, pH Soil Test, Soil Amendments, Soil Conditioner, Organic Garden Compost, Pelleted Fertilizer, Powdered Fertilizer, Organic Fertilizer, Liquid Fertilizer, Pelleted Fertilizer, Powdered Fertilizer, Liquid Fish, Foliar Fertilizer, Organic Lawn Fertilizer, Organic Nitrogen Fertilizer, Organic Plant Food, Water Soluble Fertilizer, Fertilizer Tablets, Organic Gardening 101, Urban Gardening & farming


dave Says:
Apr 2nd, 2013 at 8:38 pm

What micro-nutrients do you recommend for trees?
Do you ever fertilize tree leaves or plant leaves?
Thanks

Charlotte from Peaceful Valley Says:
Apr 4th, 2013 at 11:19 am

Dave, Different trees have nutrient preferences (such as avocados and zinc or citrus with manganese and iron), but a good micro-blend (like Biolink Micronutrients http://www.groworganic.com/organic-biolink-micronutrients-qt.html)  can supply small enough amounts that it will not over-feed.
Foliar feeding trees is usually fine as long as done when the leaves have sufficient time to dry before the sun hits them. Sometimes it leaves a residue film on the leaves that people do not like.

Joe Says:
Jun 24th, 2014 at 11:27 pm

Charlotte, would the biolink be perfect for citrus? The garden store recommends citrus growers blends but it is not organic.  Also how often and when do you use it?

Stephanie Brown Says:
Jun 25th, 2014 at 8:42 am

Hello Joe,

Yes, biolink would work on citrus, the label says “as needed”. We also carry some certified organic fertilizers formulated for citrus. Such as: http://www.groworganic.com/citrus-and-avocado-fertilizer-plus-zinc-50-lb.html , http://www.groworganic.com/citrus-and-fruit-tree-food-7-3-3-4-lb-box.html and http://www.groworganic.com/dte-citrus-mix-fertilizer-633-6-lb.html

Reply to this post

Your Name (required) Email, won't be published (required)

Comment

Please enter the word you see in the image below:



Plan & Plant a
Fall Garden Today

Click here


Find Solutions Books Fertilizers Garden Tools Growing Supplies Homestead Irrigation Seasonal Items Seeds Weed and Pest Control Other