The Holganix Blog

Manada Golf Club sees improved rooting and less disease

“Across the board, the color, thickness and depth of my roots were better when applying Holganix Golf. It gave my turf roots a more developed, web like root system.” Says Barry Ehrhart superintendent of Manada Golf Club in Harrisburg, PA.

In January 2014, Ehrhart and the general manager of the Manada were on a quest to discover a more environmentally sound and sustainable solution for the course. They felt that by incorporating organic golf products into the course’s program, they could advertise to golfers that their course was truly “Green”.

At a winter seminar at Genesis Turfgrass, Ehrhart discovered Holganix Golf. He was instantly intrigued by the sustainable element, but was sold on the idea that by developing healthier plants, they’d be able to use fewer pesticides.

When Ehrhart started utilizing Holgnaix, he developed specific case studies to examine the results Holganix Golf would have on his turf. “I applied Holganix Golf in the worst area of my golf course,” admits Ehrhart. One of those locations was along a golf green that came up to a wooded area on the course. “It was an area with high disease pressure and the roots were maybe a half an inch.”

After three applications of Holganix Golf (totaling 35 ounces per 1,000 square feet), Ehrhart examined the turf. Right away he could see that his disease suppression had significantly improved when using Holganix Golf in conjunction with fungicides.

When he pulled a core sample to look at the roots, he was similarly blow away. “I had 5 inch roots!”


In the second case study Ehrhart examined Holanix’s affect on his worst performing tees. “We did a core sample before applying Holganix and there were no roots what-so-ever.” Ehrhart then divided his tee into 3 sections: the first featured his Holganix Golf (with synthetic inputs), the center acted as a control with his normal fertility program and the third section featured Holganix granular.

“Holganix Golf was the clear winner in terms of performance. The roots on that tee were .5 - .75 inches in length. That’s a big success for me.” Ehrhart also says it helped with disease suppression.




“Ehrhart has used plenty of other high end, expensive products on his hard hit areas,” says Paul Wickey, Barry’s sales representative from Genesis Turfgrass. “But Holganix did make a big impact. That’s just a testament for Holganix and how well it works on the golf course.

Over all, playability has increased at Manada due to Holganix Golf. “This is especially true in my traditionally, worse performing areas”, says Ehrhart.

He’s also excited to say that he’s achieved his goal of making his course more sustainable. To date, he’s been able to reduce pesticide use by 25% - 30%. 

“Ultimately,” says Ehrhart, “with Holganix, I’ve accomplished exactly what I set out to do: provide a more sustainable golf course for golfers and boost plant health in remarkable ways.”

What's in the Holganix Bio 800+ jug?  Check out our ingredient list!

Tags: holganix golf course, organic fertilizer products, turfgrass, turf roots, holganix reviews, golf course, organic fertilizer, holganix review, holganix case studies, golf, golf course management, sustainable golf course, root length

How did Terry's Lawn Service get wicked fast seed germination?

“We should get a speeding ticket because we germinate seed so fast,” exclaimes a Holganix sales representative as he proudly showed off his collection of pictures (see below) sent to him by Terry’s Lawn Service.

When looking at the pictures, it’s easy to see why someone from the Holganix community would get excited about seed germination when teamed up with Holganix products.

Terry Shafer of Terry’s Lawn Service located in Morristown, Indiana put Holganix to the test on his own backyard.

This past fall, Shafer completely renovated his 1.5 acre yard. He reseeded his turf with 90% TTTF and 10% Blue seed. Seven days after seeding, Shafter applied Holganix liquid at a rate of 10 ounces per 1,000 square feet. Twelve days later, the turf was progressing steadily and had filled in nicely.

All in all, Shafer has been excited about using Holganix. According to Shafer, “I put [Holganix] into my program this spring on a majority of my lawns and have been very impressed and happy with the results I have seen thus far.”

Twelve days after seeding:

Seed germinationseed germination

Twenty-two days after seeding:

seed germinationseed germination

Why did Terry see amazing seed germination with Holganix?

Holganix is filled with ingredients specifically designed to promote healthy turf growth and give your lawn a head start.

For example, Mycorrhizae, a fungus found within Holganix, helps deliver nutrients and moisture to the plant and helps builds a dense, fibrous root system. Other ingredients, including humic and fulvic acids and Kelp extract, enhance and promote seed germination.

Both Holganix liquid and Holganix granular products help deliver superb results when fostering plant health.

What's in the Holganix Bio 800+ jug?  Check out our ingredient list!

Tags: lawn care, holganix, bionutrition, holganix reviews, organic fertilizer, turf, aeration, seed germination, starter fertilizer, organic seed germination, seed starter, holganix case studies

Increasing Brix Index and Reducing Disease at Star Dairy

organic agriculture

“I don’t sell something unless I’m sure it’s going to work,” explains Gilson Martin, owner of Star Dairy, a Holganix distributor to farmers in Pennsylvania. “We started testing Holganix Agriculture in 2011. We liked what we saw and the rest is history.”

Star Dairy has been selling dairy nutrition, soil fertility products and consulting to predominantly Amish farmers since 1994. Holganix Agriculture has been his first compost-type or bionutritional product he’s carried because traditional compost and compost teas haven’t been economical on a large scale.

“I’ve always been interested in biological products,” says Gilson when we asked why he decided to give Holganix Agriculture a shot.

“I liked the variety of organisms that was in Holganix Agriculture and thought it worth trying out. Any time I can do something other than use a chemical, I’m happy.”

Over all, Gilson’s clients on Holganix programs have seen an increase in plant vigor, yield, brix index and a reduction in disease.


Increasing the Brix Index

After using Holganix Agriculture for one year, Gilson’s clients have seen an 82% average increase in brix index (in % sucrose) in peas, sweet corn, raspberries, strawberries, tomato, watermelon and alfalfa.

Typically, the higher the brix, “the more minerals in the plant and the better the flavor,” explains Gilson. “Also, a higher brix plant should be more disease and insect resistant.” 


"[My customers] don't want to grow tomatoes without Holganix Agriculture!"

Last spring, Dr. Neidermyer, Director of Plant and Soil Science at Holganix, reached out to Gilson to create a Holganix test on tomatoes.

“I discussed the idea with my farmers that grew tomatoes but no one was interested in doing a test that involved a control! That’s because they knew that without Holganix Agriculture, the control tomatoes were going to be of lesser yield and brix as well as see an increase in disease. They don’t want to grow tomatoes without Holganix Agriculture!”

Gilson explains that with Holganix agirculture, “I’ve seen results in six months. You won’t see instant results but you are going to grow better, healthier crops!” 


What's in the Holganix Bio 800+ jug?  Check out our ingredient list! 

Tags: organic agriculture, holganix reviews, organic fertilizer, agriculture, compost tea, holganix review, compost, brix index, farmer

"How can you NOT say yes?" - Mark Tavares, Aquarius Supply

“I can’t believe I’m getting this kind of result!” is something Mark Tavares, Sales Representative for Aquarius Supply, a Holganix Distributor, hears frequently when discussing Holganix Bio 800+ with lawn care companies.

“By switching to a Hybrid organic lawn care program (50% chemicals, 50% Holganix Bio 800+), and marketing it as a company differentiator, I’ve had customers that have grown their customer base by 30% by switching to Holganix Bio 800+.

At the end of the day, when you present the information clearly, the homeowner can’t say no. Utilizing a lawn care company that uses Bio 800+ is a win-win-win for the homeowner, the lawn and the environment.”  

 After receiving his associate degree in turf grass management from Virginia Tech, Mark went to work as a manager for a landscape company’s lawn fertilization division. Today, he’s utilizing his past experience in lawn care and his educational background to better serve Aquarius customers. “I love my job. I love being able to talk to people who share a passion for turf and I love educating people about sustainable practices and soil health.”

When it comes to organic based products, Mark has experimented with many. “From biosolids to milorganite, over the past eight years I’ve used every organic based product I can think of,” states Mark. “The key reason why I started looking at organics is because it builds a healthy soil, boosting active biology and ultimately a healthier plant.” However, the aspect that turned Mark on to Holganix Bio 800+ specifically was when he compared it to other products on the market. Holganix Bio 800+ has “all the ingredients in one jug - including the living microbes. That makes it a no brainer.”

How are the results?

One of Mark’s favorite results has been the quick bounce back after a hot summer or cold winter. “The lawns just come out of dormancy faster.” He also reports that customers have seen better coloration and have reduced inputs on average by 50% for synthetic fertilizers and 30% for herbicides.

How can Holganix Bio 800+ help you reduce the need for herbicides? 

Holganix Bio 800+ products build functioning soils that result in resilient turf with deeper, thicker root systems. In fact, by having more resilient plants with a better root system, these plants are able to compete with weeds. The result is that you can often reduce your control of broadleaf and grassy weeds by up to 75%. 

At the end of the day, Mark’s customers are loving their experience with Holganix Bio 800+. “It’s boosting soil and plant health, improving their lawn care business and reducing their environmental footprint. How can you not say yes?”

Turf roots

Tags: organic fertilizer products, organic lawn care products, soil health, lawn care, holganix reviews, organic lawn care, organic fertilizer, turf, holganix review, case studies, soil food web, Aquarius Turf Supply

Why does Clay DuBose use Holganix?

Tucked amid some of the best course the Grand Strand has to offer, championship course, Tradition Club in Pawleys Island strives to deliver a challenging yet playable course. It was originally designed by famous Florida architect Ron Garl and was awarded 4.5 stars by Golf Digest in 2008.

General Manager and Superintendent, Clay DuBose CGCS takes pride in the way he nurtures the course and that is one of the many reasons why he has been utilizing Holganix at Tradition. Some of the top results he’s seen to date are: rooting, playability, soil health and overseeding. Check out his webinar below to hear why he is speaking up about his Holganix experience! 

Bionutritional Summit

Tags: organic golf course management, organic turf products, golf course, organic fertilizer, overseeding, organic golf course, Clay Dubose, rooting, Tradition Club at Pawleys Island

Not all granular fertilizers are created equal?

Screen_Shot_2015-08-18_at_11.29.36_PMPlants have four basic food groups, which consist of nitrogen (N), phosphorous (P) and potassium (K) nutrients, and also trace minerals like iron, boron, copper and zinc.
Just like in human health, it’s essential that the plant receives its food in the right balance. That’s where biosolid-based granular fertilizer steps in.

Biosolids are full of tasty nutrients like NPK, trace minerals and an extra heap of organic matter, which breaks down into food sources for soil microorganisms. However, just like with human health, your plant needs to take its probiotics.

That’s where probiotic, bionutritional granular fertilizer products step in. Just like biosolids, bionutritional products contain NPK, trace minerals and organic matter. However, unlike biosolids, bionutritional products are full of living microorganisms and other “vitamins” to boost the plant’s “immune system”.

Living microorganisms are essential to plant life, and many soils do not contain sufficient levels to support healthy plants. Biosolid-based fertilizers contain nutrients, but no living microorganisms. Therefore, they rely solely on soil’s existing biology levels to help plants uptake nutrients and fortify the plant’s natural defenses against disease and insects. 

Conversely, HolganixI Granular, a probiotic, bionutritional product created by infusing Holganix liquid onto various types of granules, containing substantial amounts of living microorganisms, as well as the nutrients plants crave.

The diverse, abundant biology in HolganixI Granular works symbiotically to deliver essential nutrients to plants so efficiently that inputs such as NPK and pesticides can be reduced up to 50%.


Turf roots

Tags: organic fertilizer products, soil health, granular fertilizer, organic fertilizer, phosphorous, Soil heath, nitrogen, soil food web, organic granular fertilizer, soil biology, soil microorganism, potassium, probiotic, biosolid fertilizer

"Holganix helps build my soil chemistry" - Orchid Island Golf & Country Club


Tucked on a barrier reef island, off the coast of Vero Beach, Florida, lies Orchid Island Golf and Country Club. Originally designed by championship golfer Arnold Palmer, Orchid Island’s course features eighteen-holes of immaculate greens, tee boxes and fairways.

In 2005, Orchid Island, “achieved the distinction of becoming a certified Audubon cooperative sanctuary by Audubon International Sanctuary System, the education Division to Audubon International, which recognizes environmental stewardship.”

According to superintendent, Matthew Boyd, “Orchid Island is an atypical environment.” It’s in a microclimate all of it’s own, with sandy soils and an ever present sea wind that keeps the soil dry. It makes nurturing the course a challenge but one Boyd takes pleasure in.

“Holganix helps build up my soil chemistry,” explains Boyd, something that’s crucial for a course like Orchid Island. Over all, Holganix helped Boyd improve rooting, CEC levels and carbon to nitrogen ratio.


Increasing turf rooting 

The first thing Boyd noticed after starting Holganix in 2014 was “deeper, denser rooting on greens.”

Initially, he also saw improved playability due to increased consistency on his greens, and less disease than years past (although he admits that it’s hard to quantify reductions in disease due to variability in past years).


Improving CEC Levels and C:N Ratio 

Perhaps the easiest way to sum up Boyd’s superintendent style is data enthusiastic. He constantly monitors the course’s progress and has teamed up with an agronomist to better research and customize his agronomic program.

When it comes to Holganix, the thing that blew Boyd away were his soil analysis results which were taken one year after incorporating the Holganix program along with other various organic profile amendments. Included in the data summary were huge improvements to Cation Exchange Capacity (CEC) along with the soil organic carbon to nitrogen ratio.

“We had steady improvements in soil health both before and after Holganix, especially with our CEC,” says Boyd.

What does CEC mean? Think of it this way, the soil acts as a pantry/storehouse for all plant nutrients required by the plant. The soil’s ability to hold, maintain and release essential nutrients is Cation Exchange Capacity. So, the greater the CEC, the more nutrients the soil can store and the happier the plant.

From 2010 to 2013, Boyd utilized an alternative biological supplement and had a slight, yet steady increase in CEC achieving 4.81 M.E. in 2013. One year after incorporating Holganix into Orchid Island’s agronomic program, Boyd reports an increase in CECs from 4.81 in 2013, to 7.78 in 2015! That’s over a 60% increase!

Also revealed in the soil test was a noticeable difference in organic matterOverall, organic humus has increased from .42 to 2.8% – something that is crucial to the health of sand-based soils. Why is humus crucial to sandy soils? It increases the soils capacity to hold and store essential plant nutrients, decreases the potential for leaching, assists in the remediation of excess sodium and bicarbonate and provides a sustainable food source for both plants and beneficial soil biology. Yet, thatch has decreased. “That’s because the biology within Holganix was converting all of the old growth found in the organic matter into nutrients that are available to the plant,” explains Boyd.

Furthermore, Boyd’s soil organic carbon to nitrogen ratio increased dramatically after one year of Holganix. “My carbon to nitrogen ratios are better than they used to be,” says Boyd. “That’s awesome because all of that free carbon is food for the microbes and the microbes just take off!”

Overall, Boyd is excited by the progress he’s seen with Holganix at Orchid Island. “Soil microbiology is going to be a hot topic in the next ten years and Holganix is right in the middle of it,” says Boyd. 

Turf roots

Tags: soil health, holganix reviews, golf course, organic fertilizer, holganix review, soil amendment, orchid island golf and country club, carbon exchange capacity, soil analysis, nitrogen ratio, organic matter

Soil is home to biology!

The soil is truly a living thing, filled with millions and billions of life forms, busily working away according to Mother Nature’s plans. In fact, one teaspoon of agricultural or turf soil contains:

-       100 million to 1 billion bacteria

-       Several yards of mycelium (fungi)

-       7,000 protozoa

-       10-20 nematodes

-       Up to 100 arthropods

-       5 - 30 earth worms

What happens in the soil when everything is balanced and functioning as Mother Nature intended?


1. All functional soil is a balanced environment, where plants, microbes, protozoa, nematodes and worms contribute to the well-being of each other.

For example, plants exude sugars, amino acids and organic acids through photosynthesis into the soil. Bacteria and fungi then eat the plant exudates. Next, the bacteria and fungi are eaten by each other, as well as by protozoa, nematodes and worms. In the end, all soil organisms die (including plants) and become organic matter. This dead biomass then becomes food for the living organisms in the soil.

Screen_Shot_2015-07-24_at_8.25.57_AMPhoto above from USDA Natural Resources Conservation Services.  


2. In a functional soil, biology contributes to soil structure.

Exudates from plant, microorganisms, and multi-celled organisms serve as a glue assisting in the aggregation of soil particles. While worms, tunnel in the soil, creating air space and to facilitate drainage within the soil.


3. In a functional soil, microorganisms decompose organic matter. In fact, without microorganisms, dead plant and animal life wouldn’t decompose.

Ultimately, soils would become putrid and compaction layers would be created. However, with microorganisms, decomposition occurs naturally. During decomposition, microorganisms provide nutrients (including carbon) to the soil and create humus (the stable form – an end product of organic matter decomposition), contributing to the soil structure.


4. In a functional soil, organisms (including plants) contribute to a mineralization cycle.

Nutrients are immobilized when they are used by plants and soil organisms. When immobilized, minerals are tied up in the chemistry of living organisms. Immobilized nutrients are freed (this is called mineralization) to be used by all living organisms when other organisms die. During decomposition these nutrients are released from multi-cell plants and animals. When single cell organisms die, the cell walls break and chemicals and nutrients are released to the soil.


5. In a functional soil, nitrogen fixing bacteria (Rhizobia) and nitrifying bacteria make nitrogen available to plants.

Nitrogen fixing (rhizobia) live in a symbiotic relationship with roots of legumes (beans, alfalfa, clover). The bacteria receive sugars and other plant chemicals from the plant and in return, Rhizobia convert nitrogen from the soil atmosphere into nitrogen compounds usable by the plant.

Nitrifying bacteria live in the soil (not in direct association with plants). These bacteria change nitrogen in the soil from ammonium to nitrite and then to nitrate (a plant usable form of nitrogen).


6. In a functional soil, certain fungi live in symbiotic (help each other) relationships with plants.

For emycorrhizaexample, mycorrhizae are fungi that live in direct association with plant roots. In this relationship the plants provide sugars, amino acids and other plant acids to the fungi. The fungi then facilitate water and nutrient uptake by the roots.

There are two different types of mycorrhizae: Endo and Ecto Mycorrhizae. Endo mycorrhizae penetrate and attach to the root hairs of the plant roots. However, Ecto mycorrhizae lie in close proximity to the plant roots but do not actually penetrate the cell wall of the root hair.







7. In a functional soil, fungi and bacteria serve different decomposition roles.

Fungi have evolved to be expert organisms for decomposition of lignin, which is abundant in tree, leaf and branch litter on the forest floor. This is one of the reasons why fungi dominate in forest soil as opposed to agricultural or turf soil. On the other hand, agricultural and turf plants exude large amounts of sugars and organic chemicals. These are easily digested by bacteria. That, in addition to low lignin content in agricultural and turf litter, is why bacteria dominate this soil.


Want to learn more?

Click the movie below to watch Dr. Bob’s webinar entitled Digging into the soil food web.

Tags: Dr. Neidermyer, the science behind holganix, Mycorrhizae, organic fertilizer, soil food web, nitrogen fixing bacteria

What are the components of healthy soil?

When asked “What is soil?”, Dr. Bob, Director of Plant and Soil Sciences at Holganix, LLC replied, “Soil is the source for all food and fiber consumed on Earth. It is a medium composed of minerals, organic matter, water, air and living organisms. It provides infrastructure to support and nurture plants.” Let’s take a brief look at each of these key components.


1. Minerals

There are numerous different minerals, all charged with an important task to promote plant and soil health. Some of the key minerals include:

Carbon – The building block of all organic chemistry.

Calcium – In plants, calcium is a structural component of the cell wall. In plants, fungi and bacteria, calcium is a cofactor in regulating internal chemical processes. In soil, calcium shifts the pH to alkaline (vs acid).

Manganese – An essential element of chlorophyll (think Photosynthesis)

Nitrogen – All plant and animal proteins contain nitrogen. It is essential to life.

Potassium – An essential plant nutrient involved in the regulation of photosynthesis and water management in plants.

Phosphorous - an essential element in the biochemistry of photosynthesis, metabolism of sugars, energy management, cell division and the transfer of genetic material. In fact, phosphorous is essential to all life forms.

Sulfur – An important component of amino acids and proteins.


2. Organic Matter

3 to 5% of soil consists of organic matter. It is derived from dead and decaying plants and animals. It contributes to soil nitrogen, phosphorous and sulfur. The end result of organic matter is humus, which is created after microorganisms break down the organic matter.


3. Water

Water acts as a solvent and carrier for plant nutrients. Just like all animals, microorganisms require water for their metabolic processes.


4. Soil Air/Atmosphere

50% of soil volume consists of pore spaces filled with air and/or water. Gases found in soil air include: oxygen, nitrogen, carbon dioxide and water vapor. However, due to respiration of soil microorganisms, soil air has more carbon dioxide than the air we breathe (the atmosphere above the soil).


5. Soil Microorganisms

There are more microbes in 1/3 cup of soil, than there are people on earth! Soil microorganisms include: bacteria, fungi, algae, protozoa, arthropods, nematodes and worms. Often, tilled soil (soil used in agriculture and landscaping) is more bacterially dominant while non-tilled soil (soil found in a forest) is more fugally dominant.


Want to learn more? Click the movie below to watch Dr. Bob’s webinar entitled Digging into the soil food web.


soil food web 

Tags: soil, the science behind holganix, organic fertilizer, soil food web

Ready to combat drought?


The infamous California drought, “now on its fouth year, has taken its toll on water supplies and a reduction of 25 percent is now mandated,” says Denne Goldstein, publisher of Irrigation and Green Industry Magazine.

And, in Texas, water restrictions resulted in hundreds of thousands of lost trees.

But California and Texas aren’t the only drought victims, “56 percent of the entire United States, from California to New England, is experiencing drought conditions and water-related challenges,” confirms Judith Guido, contributor for IGIN Magazine.

Lucky for you there is a weapon in your turf management kit to help you combat drought - Holganix.

In fact, Holganix can help in times of drought and extreme heat in three key ways: 1) stimulating uptake of nutrients and moisture, 2) providing natural wetting agents and 3) enhancing root growth.


1.    Stimulating uptake of nutrients and moisture

Mycorrhizae and kelp extract are two examples of ingredients within Holganix that stimulate uptake of nutrients and moisture by the plant, ultimately aiding in drought tolerance.

Mycorrhizae are fungi that live in direct symbiotic association with plant roots. In this symbiotic relationship, the plant excretes energy sources (sugars, amino acids and other plant acids) to the fungi (from the plant roots to the soil for uptake by the fungi).

The fungi use this energy to grow long mycelium (filaments) that extend well beyond the length and width of the plant roots. The mycelium transport water, minerals and nutrients to the roots. In this way, fungi facilitate the uptake of water and nutrients by plant roots.

This is a mutually beneficial relationship in that both the plant and the mycorrhizae receive benefits that they cannot receive independently.

During droughts the plant limits growth or stops growing altogether, ultimately reducing photosynthesis (the process that creates the sugars for the mycorrhizae). Thanks to evolution, the mycorrhizae have learned to minimize the droughts effects on the plant in these distinct ways:

  1.  By adding their own expansive network of mycelia, they are able to reach deeper into the soil for water and nutrients outside the reach of plant roots.

  2.  By helping the plant better seal up their pores/stomata, the plant conserves moisture. Instead of wilting in the drought, a well hydrated plant keeps stomata closed (the guard cells of the stomata swell). As a result, they close the open space that allows evaporation.

  3.  By increasing water pressure in plant tissue, mycorrhizae prevent or delay-wilting, which results in normal cell function and photosynthesis.

Kelp extract found in Holganix also boosts drought resistance.

Minerals and carbohydrates contained in Kelp extract are absorbed and utilized by microorganisms in the soil. Upon death of the microoganisms, minerals are released to the soil, stimulating plant and root growth. A healthy plant with a strong root system has the vigor necessary to support active uptake of water and nutrients.


2.    Natural Wetting Agent

Yucca extract is another important tool against drought that is contained in Holganix. Yucca acts as a natural spreader sticker, wetting agent and soil conditioner.

What does that mean?

Spreader stickers and wetting agents help coverage of product on the plant and slow moisture loss. Similarly, wetting agents help reduce surface tension, allowing product to cover the plant so active ingredients can better penetrate the plant tissue.

Additionally, Yucca extract (acting as a soil conditioner) has the ability to help soils hold water.

These unique functions of yucca extract in Holganix each aid in drought tolerance by keeping moisture in the plant and soil, and by allowing for other products and ingredients to better penetrate plant tissue.


3.   Enhanced Root Growth

By having deeper, more web-like root systems, plants are better able to reach into the soil and take up moisture and nutrients. Tricoderma spp., is an ingredient in Holganix that enhances root and plant growth. Additionally, as discussed previously, mycorrhizae (found in Holganix) can also help expand the reach of plant roots.

Together, Trichoderma spp. and mycorrhizae contribute to a denser and longer root mass that is more efficient in obtaining the water and nutrients plants need.

Soil Science

Tags: drought resistance, summer lawn care, organic fertilizer products, the science behind holganix, organic lawn care, organic fertilizer, drought