Using Probiotics in the Garden

Updated on March 26, 2018
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Amelia has been an avid gardener since childhood and enjoys experimenting with natural and sustainable gardening methods.

I use Garden Probiotics throughout my yard.  It really helps with transplant shock and boosts growth.
I use Garden Probiotics throughout my yard. It really helps with transplant shock and boosts growth.

You have heard how important probiotics are to your health, but have you ever considered how important they are to the health of your garden? Have you considered fortifying your perennials with a probiotic foliar spray or giving your fruit trees a probiotic boost next time you water? I had not even thought of this myself until just a few months ago, but am excited about the results seen in my garden already.

While you really could use just about any probiotic to give your garden a boost, I use a solution of cultured molasses because of the impressive mineral profile. Molasses is rich in iron, magnesium, and calcium, all of which are necessary for plants as they are for people.

The recipe can be used to start garden probiotics from scratch as well as to propagate your culture in batch after batch.

Do Plants Need Probiotics?

Just like us, plants need beneficial bacteria to protect them inside and out. With a healthy probiotic colony, plants are protected from molds or other pathogens and are even better equipped to deal with insect attacks.

Their use dates back at least to 17th century Japan when an agricultural revolution swept the country. Family farmers developed potions called bokashi, specially adapted to their area, to nourish and protect their crops. Today, bokashi is manufactured commercially in Japan and is available elsewhere under the name "effective microorganisms" or "EM."

Have you ever used probiotics in your garden?

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What You'll Need

  • 2 one-quart mason jars with bands and lids
  • 1 cup unsulphered organic molasses
  • 1 capsule quality probiotic OR 1/4 cup Garden Probiotic from your last batch

Instructions for Making the Starter Culture

  1. Add 1/4 cup molasses to one of the jars.
  2. Open probiotic capsule and empty contents onto molasses in jar OR use a quarter cup of Garden Probiotic from your last batch.
  3. Add water until fluid reaches the jar's shoulder.
  4. Cover with lid and band and shake until molasses is dissolved.
  5. Place in a warm place (80-90 degrees Fahrenheit) until a white/gray substance settles on the bottom (1-7 days).
  6. Use or refrigerate.

What to Look For

  • White/gray substance on the bottom is the result of successful culturing.
  • If the culturing was successful, the result should be bubbly and possibly a thin white film (not mold).
  • It should smell like molasses, but brighter. If you like molasses, you will probably also enjoy the flavor (go for it! It is great for you as well as for your garden).
  • If you have been successful, this will be the starter culture for future batches (instead of the probiotic capsule).

Wholesome Sweetners makes a wonderful and nutrutious molasses.  I measured only to verify the recipe for the sake of accuracy, but once you get the hang of it, you will be able to add a good-sized dollop instead.
Wholesome Sweetners makes a wonderful and nutrutious molasses. I measured only to verify the recipe for the sake of accuracy, but once you get the hang of it, you will be able to add a good-sized dollop instead.

Tips and Tricks

  • Now, whenever a jar gets down to about half a cup, add another 1/4 cup molasses and water up to the jar's shoulder and repeat. Refrigerate.
  • To tell how far along the process is, look for the white substance at the bottom. If it is completely white, the process is probably complete.
  • There is a fair amount of leeway on the timing of the culturing process. There is a lot of sugar in molasses and the beneficial bacteria will keep on eating it for some time. I use the culture before all the sugar is used up so that the bacteria will have something to eat as they begin colonizing the plants. It also tastes better that way. However, make sure it is nice and bubbly so that the solution will not attract bugs.
  • Other factors affect culturing time as well. Up to around 100 degrees Fahrenheit, the warmer the solution, the faster it will culture. Also, in my experience, the first batch takes about a week, but subsequent batches take less time. If used and refreshed frequently, the culture stays stronger and culturing will go faster.

Using Garden Probiotics

Garden probiotics can be used three ways in your garden:

  • Diluted and used for watering,
  • Diluted and used to spray foliage
  • Added to livestock water.

I occasionally water the trees and shrubs with it, but normally I use the foliar spray, because foliage can absorb the nutrients more efficiently than roots (since the solution defuses in the soil and not all of it makes it to the root) and the beneficial bacteria will be able to colonize the foliage immediately.

I aim to use the foliar spray every 2-4 weeks during the growing season. If you use kelp liquid fertilizer or another natural liquid fertilizer, it can be mixed in with this application.

Watering with Garden Probiotics

To water with Garden Probiotics, simply:

1. Dilute one part Garden Probiotics with 10 parts water. That's about 3/4 cup per gallon of water.
2. Use immediately on any plant.

This is a great way to get your perennials off to a good start early in spring. Use it again in the fall as the plants go dormant. A good culture will also help your indoor starts.

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It only takes a little to make a big difference in your garden.Fill it up to the 10:1 line with garden probiotics.Then fill up the bottle and replace the nozzle.
It only takes a little to make a big difference in your garden.
It only takes a little to make a big difference in your garden.
Fill it up to the 10:1 line with garden probiotics.
Fill it up to the 10:1 line with garden probiotics.
Then fill up the bottle and replace the nozzle.
Then fill up the bottle and replace the nozzle.

Spraying Foliage With Garden Probiotics

To make a foliar spray, simply:

  1. Dilute one part garden probiotics with 10 parts water in a spray bottle. Many spray bottles come with marks for dilution. Fill the bottle to the 10:1 mark, then fill the rest of the way with pure water.
  2. Replace nozzle and spray on any part of any plant.

Adding Probiotics to Livestock Water

To share it with your chickens or other animals, simply mix a small amount with their water (about 10:1). My birds love it.

Best Probiotic

Garden of Life - Raw Probiotics Ultimate Care, 100 Billion, 30 Veggie caps
Garden of Life - Raw Probiotics Ultimate Care, 100 Billion, 30 Veggie caps

The best probiotic that I have tried is Garden of Life Raw Probiotics Ultimate Care. It is pricy, but I can make almost 100 quarts of probiotic foods with one bottle, so it only amounts to around 33 cents per quart. Not bad. When I use it for culturing, the things culture much more quickly, so when using this probiotic in sauerkraut, for instance, I only culture it for two days instead of three.

 

Which Ingredients Are Best?

  • You will get what you pay for. That said, the original batch of starter culture cost me about 65 cents, and subsequent batches cost less than 30 cents per quart and a quart can make several gallons of foliar spray.
  • Starting with a quality probiotic means means you have billions of organisms in dozens of strains. You are unlikely to acquire all these strains unless you start with a good base.
  • Using organic, unsulphered molasses means a pure substrait, free from poisons that may kill desirable bacteria or even the plants you are trying to nourish.
  • Using pure, unchlorinated water means no harmful chlorine or florine to jeopardize your culture.

Conclusion

This method of nourishing plants and ecosystems has stood the test of time and deserves to be a part of our gardening. Probiotics can enhance the health of your plants and garden as a whole, making it stronger and more resistant to infestation.

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