Reaching a Higher Lever with Foliac Feeding

Foliar feeding is a process used to feed nutrients to  a plant by absorption through the leaves into the plant tissue by way of the stoma.

Stomata are tiny little pores on the underside of the leaves that are able to intake nutrients and carbon dioxide. Foliar feeding has been used and researched by growers for many years and can be a very efficient way to provide nutrients to a plant, providing great benefits to a grower in most stages of plant life when used correctly.

A great advantage of feeding nutrients through the leaves is that a cannabis plant is able to intake nutrients through foliar sprays more quickly than through the root zone. But foliar sprays pose the risk of over-feeding the plants and causing more damage than repair. Creating a foliar feed- ing nutrient schedule and knowing when to use it will ensure adequate foliar feeding.

There are many different purposes and uses for foliar feed- ing, including nutrient deficiencies, pests, mold, and dis- eases. Foliar feeding can also promote healthier growth and advancement in any growth stage. Plants will produce more bud sights per branch, leading to bigger yields with higher quality.

Preparing a foliar spray

Foliar sprays should only be used with distilled or osmo- sis-filtered water. Tap water may contain too much calci- um and magnesium, nutrients that may already be pres- ent. Foliar sprays without filtered water can eventually lead to nutrient deficiency, and you don’t want that.

Water that will be misted on foliage should always be cooler than the ambient room temperature. Cooler water is also less susceptible to pathogens and foliar diseases. Ensure that the temperature of the water is between 62 to 70 degrees Fahrenheit, or 16 to 21 degrees Celsius.

The concentration of foliar sprays should always be dilut- ed more than nutrients provided to the roots. A low nutri-

ent level of 0.3 to 0.6 electrical conductivity (EC) is a pre- ferred for a regular foliar spray concentration. The maxi- mum concentration for foliar sprays should be no greater than a 0.8 EC to 1.0 EC level. Raising the EC level above this point can have increased risk of over-feeding and burning the foliage.

When the nutrients are mixed, temperature is set, and EC level is acceptable, it’s time to check the pH of the water. Nutrients are only available to the plants at certain pH levels, so it’s important to match your water to the correct level. If the correct PH levels are not provided in the nutri- ent mixture, the foliar spray will not only create nutrient deficiencies, but it will also cause nutrient burn to the foliage. This can also leave the plant helpless and more susceptible to bugs and foliar diseases, which left untreat- ed, can greatly decrease overall quality, taste, and yield of the final product.

The correct pH level for foliar sprays also depends on the growing system and whether the plants grown are in soil/soilless medium or hydroponics. For soil/soilless medi- um plants to intake a vast amount of different nutrients efficiently, the pH should be between 6.2 and 7.0. For hydroponic cannabis plants, the pH should be between

5.8 to a 6.2 pH level for intake of vast amounts of differ- ent nutrients efficiently.

Foliar feeding should always be performed with an atom- izer or spray bottle with the option of a fine mist. Using a fine mist will allow water to easily attach to the foliage without draining off the leaves, creating a thin coat of water evenly throughout the leaves. When using a regular spray, the water will quickly drain off the foliage and leave behind little beads of water that can refract light and burn the foliage of the plant. Experienced growers will com- monly use a surfactant/wetting agent in every foliar spray mixture, with only filtered water. A surfactant helps the absorption into the leaves and also aids in relieving the surface tension of the foliar solution.

Foliar solutions can be stored for short periods of time, usually two to seven days, before discarding.  Organic foliar solutions may have an even shorter shelf life than synthetic foliar solutions. The longer a foliar spray sits, the greater the chance of spreading pathogens and disease to the plant.

When to use foliar sprays

Foliar feeding should be performed when the stomata are fully opened; they will begin to slowly open up once the lights turn on each day. The most effective time to foliar feed is about one to two hours after the light comes on, while temperature and CO2 levels are still rising. At this time, the stomata are fully opened, and plants start exert- ing their energy into absorbing nutrients and dispersing them to areas of the plant in need. Cannabis plants do not intake nutrients or CO2 during the dark period of  the  light cycle. During this time, the stomata in the foliage are closed to avoid any moisture loss.

Before foliar feeding, raise the lights two to three feet high- er than the normal set point above the plants to avoid foliar burn. Leave the grow lights raised for 15 to 30 min- utes, giving the foliar spray time to absorb into the leaves.

Be sure to return the lights to their lowered position when finished. Another method is to simply turn off grow lights while using regular household light during foliar feeding. Again, remember to turn on grow lights when finished.

Another great suggestion is to turn off oscillating fans so the foliage can have more time to absorb the solution. If fans are not turned off, the foliage will have less chance of absorbing the foliar solution. Evenly mist the top and bot- tom surfaces of the leaves lightly with a foliar spray solu- tion; then let dry slowly. A day after each foliar feeding, mist the leaves with only filtered water. The extra mois- ture will allow foliage to absorb any leftover dried nutri- ents (This can be repeated on the second to third day to get the most out of each foliar feeding).

About three to four days in between and after each foliar feeding, make sure to wash off any excess nutrients and leftover salts. This will ensure that the stomata are able to breath and fully absorb all light. Using dark or organic fertilizers as a foliar spray may block the top of the leaves from soaking up sufficient amounts of light. For example, dust on a glass cover of a reflector or light bulb will block the full intensity of the light from getting to the plants.

Washing the inside of the reflector and glass cover will ensure the fullest potential of the light bulb.

Just like feeding nutrients to a medium, it is recommend- ed to take a break on feeding, then watering, for a few days up to a week till feeding again. Foliar feeding too fre- quently can lead to overfeeding and stress on the leaves, as foliage is only able to handle very low amounts of nutri- ents at a time. If using a new or unfamiliar foliar feeding mixture, it is best to start foliar feeding on a seven to ten day schedule at half recommended dosage, or about 0.4 EC, before using it more frequently at a higher dosage. This will help ensure less chance of over-feeding and help one understand how much the foliage is able handle before burning the leaves.

When foliar feeding in parallel with your basic nutrient schedule, the roots will intake fewer nutrients because they are already being provided for with the foliar feeding. Lowering the concentration of nutrients to the roots about 25 to 50 percent will provide best results for nutrients that will be provided as a foliar feeding.

During times when the stomata close,  foliar  feeding should be avoided, as it can make a foliar application less efficient. An environment with high temperatures above 84 degrees Fahrenheit, in dry conditions with low humid- ity below 35%, when the roots and medium are dry, over- abundance of provided CO2 and during the dark period: During all of these conditions, the stomata are closed, and foliar applications become less efficient or completely use- less and can damage the foliage.

Foliar feeding can be used to prevent any pest, fungal, and foliar diseases. For pest, mold, and disease control, high- concentration foliar feeding is recommended at 0.8 to 1.4 EC. The most common foliar solutions include neem oil, sesame oil, cinnamon oil, insecticidal soap, and pyrethrum. Foliar solutions with a high pH  level  will make these foliar solutions more effective.

Correcting deficiencies with foliar feeding

A nutrient deficiency is when a plant is not getting enough nutrients, or too many nutrients are being provided to the plant.

Deficiencies will affect the health of  a  cannabis plant as well as the yield, taste, look, and quality  of the end product. If not treated, deficiencies can slow growth or result in total crop failure.

PH levels have a huge impact on nutrient intake, and if not in the correct range, the plant won’t be able to intake the available nutrients provided. Foliar sprays can be a great way to fix nutrient deficiencies in the plant and have the ability to fix a nutrient deficiency faster than feeding nutri- ents to the roots.

When a nutrient deficiency is noticed, the first thing to do is check the pH and EC levels to see if they are in the cor- rect range. For hydroponically grown plants, simply check the hydroponic reservoir. For soil/soilless mediums, first soak the medium with pH-balanced water for five to ten minutes, and then apply more water until it starts drain- ing through the bottom of the container. Test the pH level of the runoff water from the medium. If the pH levels are off, simply correct them and don’t add any further nutri- ents, since they have already been provided and the plant has not taken them in yet.

If the correct pH level is being provided, then the EC level must be examined. This can be done by also testing the runoff water of the medium containing the roots.  When EC levels appear to be too high, flush the root medium  and spray the plant with pH-balanced water. If EC levels appear to be too low, examine the symptoms to identify the deficiency. Create a foliar spray and provide the spe- cific nutrients required.

When nutrient deficiencies seem to be a confusion, it is best to flush the root medium. This should be done with pH-balanced water with double or triple the amount of water per container size. Wait about five to seven days before applying any nutrients to the roots, and inspect the foliage daily to see if the deficiency is continuing to progress or has been reduced.

If deficiency is continuing to progress, spray foliage with a foliar spray and add a low nutrient concentration to the root zone. When overfeeding occurs, it is best to spray the plant with only pH-balanced water every day  alongside the roots. This will help the plant intake more water than nutrients to even out the balance of nutrient concentration at a quicker rate.

Foliar feeding to boost growth, yield, aroma, and quality

There are a variety of different foliar solutions to boost a cannabis plants growth. Using these steps in your foliar feeding schedule can greatly increase yield, aroma, and overall quality of the end product.

In the cloning and seedling stage, the most common foliar spray solutions include low levels of B vitamins and very low levels of macro nutrients that may include nitrogen, phosphorus, and potassium. For clones and seedlings, foliar solutions should be no higher than 0.4 to 0.6 EC. Foliar feeding with mother plants can have a great impact on relieving stress for future clones, and stress-free moth- er plants can have a greater percentage rate for successful clones.

About seven days before cloning, use a mixture with B vitamins and a low nitrogen level, with higher lev- els of phosphorus and potassium. A kelp extract is com- monly used to achieve this lower nitrogen level and will soothe mother plants from stress after cloning. This will also help encourage plants to grow an extended amount  of new branches at a quicker rate for an abundance of clones.

In the vegetative and early flowering stage, foliar feeding  is commonly used to promote a plant to grow faster with shorter internode spacing and with extended amounts of bud sights per branch. This can be achieved with seaweed extract, kelp extract, alfalfa meal, and krill meal, and also with higher levels of phosphorus and potassium. B vita- mins can also be applied to ease plants from stress.

Carbohydrates and fruit extracts can be applied as a foliar spray in late vegetative and early flowering to boost the sugar level in the plant, which can have a great impact on flavor, quality, and yield. Often buds will become more pungent and flavorful. Sugar levels in the cannabis plant can be determined by a Brix meter, also known as a refrac- tometer. A reading from 12 to 16 is perfect for the cannabis plant.

One of the most recent foliar  spray  applications  includes a product called chitosan. Chitosan has been used and researched in agriculture and horticulture for many years and is known to be one of the best inducers for the cannabis plant. Chitosan is an elicitor that,  once  applied to the foliage, makes the cannabis plant act as if it is being attacked. The defense system responds, which induces increased growth, photosynthesis, and nutrient intake in all stages of growth. As a bonus, it also increases resist- ance to insects, fungus, and pathogens.

In the flowering stage, chitosan can be used to promote bigger yields with abundant trichomes. When the defense system responds in the flowering stage, the cannabis plant produces more trichomes to protect the flowers from harm. Often the buds will become completely coated in trichomes. With the ability to produce more  trichomes, the plant has the potential to grow much larger, trichome- filled buds.

Foliar feeding in all stages of growth can provide a 10 to 20% increase in yield and trichome production, giving a little bit more to those nice, chunky, sticky-icky buds.

Add a mist to the list and get your foliar on!

Leave a Reply

Your email address will not be published. Required fields are marked *

Latest Posts

This menu shows the most recently posted content for a quick update since you last checked-in.

How to Sober Up from Being High?

Cannabis consumption brings different effects, depending on the person’s level of smoking tolerance. After an extreme euphoric effect, what comes...

From the Family Vault of Shanti-Baba

"Seems more than strange to grow up as a child and see how important my parents and their peers viewed...

Why Get Pines Wheatgrass

Wheatgrass might just be a typical plant growing in your backyard, but few people know that it has a lot...

How to Make Your Own Canna-Caps

by Old Hippie BeyondChronic.com What do you do when you need cannabis medicine and you can’t or don’t want to...

Database Search

Are you researching marijuana as medicine? Use the simple form below to search any condition. Read personal stories from patients just...

Cannabinoid Receptors in the Body and Their Importance

David B. Allen M.D. By legal Democratic Vote; Cannabis Is Medicine To get CBD from top verified sources, click here....

The True Origins of Haze

By Big Herb It all began in 1969, In Santa Cruz, California. At the time, there was Thai Oaxacan and...

Top 5 Health Benefits of Hemp Seeds

Hemp seeds are those seeds that are formed from Cannabis Sativa, a hemp plant. They are different from marijuana but...

Cannabis and Working Out

If you're wondering how cannabis can help you with your workout regime, then you probably need to read this article....

How Companies Are Creating Innovative New CBD Products

Cannabidiol (CBD) is a non-psychoactive compound found in cannabis and hemp that may deliver unique health benefits. CBD is just...

5 Marijuana Compounds That Could Help Combat Cancer, Alzheimer’s & Parkinson’s

by Paul Armentano Deputy Director of NORML (the National Organization for the Reform of Marijuana Laws) This commentary was initially...

Living with Osteogenesis Imperfecta

By Michael Morrow My name is Michael Morrow, I'm 37  years  old and I have Osteogenesis Imperfecta. OI is a...

Gifts from Mother Nature

By Dianna Donnelly - "The couch activist” Aspirin, otherwise known as Acetylsalicylic Acid, is one of the most commonly ingested preventative medicines...

Paradise Seeds Allkush; More Than Just Kush

One of the new feminised strains from Paradise Seeds is named “Allkush”. So nothing but Kush? Taken genetically literally, no...

28ft… The John Berfelo Story

By John Berfelo "Medical marijuana saved me from a life on pharmaceutical drugs..." My name is John Berfelo and this...

My Grinspoon Moment

By Carl Hedberg Sometimes a single meeting can change your life. Such was the case for me when, in the...

The Science Behind Cannabis Safety

David B. Allen M.D. By legal Democratic Vote; Cannabis Is Medicine. Drug safety is on the minds of most all...

Heavenly Hash: The Art, Science and Industry of Cooking with Cannabis Extracts

by Samuel Wells Samuel Wells is an Assistant Professor of English in Denver, CO An Edible Enigma As scientific and...

Living High with HIV

How Medical Marijuana Rivals Mainstream HIV Medicine By BenBot In 2011, I was diagnosed with HIV. An unmarked van was...

Post-Traumatic Stress Disorder

With Veterans at Risk, Change is Necessary, but Progress is Slow By Mary Lou Smart In 1933, the repeal of...

Milagro Oil for Lung Cancer

By Mary Lou Smart www.medicalcannabisart.com Compassionate care advocates Michelle and Michael Aldrich at Patients Out of Time’s Seventh National Clinical...

Living and Dealing with ADHD

by Patricia Allen It was back in 1974 that I first became familiar with the term Attention Deficit Hyperactivity Disorder...

Inflammatory Comments

by Bill Drake As a long-time TY reader I’ve noticed what seems to me to be a rather over- whelming...

How Cannabis Might Keep Coronary Stents Open Longer

By David B. Allen M.D.Cardiothoracic and Vascular Surgeon, Member ICRS. And Prisoner of the Drug War Cali215doc@gmail.com First the set...

Unlocking the Secrets, Advanced Tissue Culture

Tissue Culture is a process of isolating cells from plant tissue (explants) which are cultured (grown artificially), in a nutrient...

Anxiety Panic Disorder and Cannabis

By Hal Lubinsky My name is Hal Lubinsky. I'm in my forties, a husband, a father, a grandfather, a U.S....

Can Cannabis Cure Schizophrenia?

By Richard Shrubb, Freelance sailing, health and social affairs journalist ould cannabis treat or even cure schizophrenia? Things look promising...

Multiple Sclerosis: Regaining the Good Life with Whole Plant Therapy

By Mary Lou Smart© 2012 www.medicalcannabisart.com A trial attorney, Jim Dyer practiced law in Tucson, Arizona for 34 years before...

The Science of Cannabis Leads in Many Directions

The Evolution of a Sense of Well-Being By Mary Lou Smart www.medicalcannabisart.com While speaking at Patients Out of Time’s Seventh...

Healthy Body, Healthy Mind

By Shantibaba It is evident for all people who wish to listen that doing all things within moderation is better...

Post Traumatic Stress

Psychology and Medication at its Best By Jeff Kundert OTR Jeff works as a Wellness and Fitness Educator. He has...

The Ripper Effect

By Subcool Some really interesting information has come to my attention, and I am very excited to tell everyone in...

Auto-flowering Plants

By Shantibaba The discreet evolution of Auto-flowering cannabis plants is a recent occurrence, one that is in mode at present...

Uncovering the Original Sacrament: Chris Bennett’s Cannabis and the Soma Solution

Review by Samuel Wells When asked to name an author crucial to the growing mainstream understanding of the uses of...

Cornerstone of Individualized Phytogenetics ACDC 22:1 @ CB3

Alternative Cannabinoid Dietary Cannabis 22%CBDA:1%THCA acting at GPR55 Alias CB3 by William L. Courtney, MD, AACM American Academy of Cannabinoid...

Mr. Magoo

By Ron Hudson My birthdays: I woke that birthday morning, in October of 1966, knowing it would begin like the...

Medical Cannabis University

By Reverend Philip H Hoff - Chancellor, MedicalCannabisUniversity.org ( MCU, Inc. ), a 501 c(3) nonprofit school. The school focused...

Storm’s Story

By Georgia Peschel WHEW! Delivering this kid was like delivering a hurricane!” When our son was born, those were our...

Soil Pests & Diseases

By Lazystrain Soil is a living organism made up of billions of microbes and bacteria. The cosmology of soil life...

A Tragedy Felt Around the World

by Jonny Appleweed On Oct. 27, 1970, President Richard M. Nixon signed into law the Comprehensive Drug Abuse Prevention and...

Autism & Cannabis

Prohibition Makes it Tough on Parents by Mary Lou Smart Jeremy Patrone (not his real name) has a goal. He...

Vaporization of Cannabis: Are there benefits over combustion?

By William Eckhardt Although vaporization is a relatively recent development for the delivery of cannabinoids the proliferation of vast numbers...

Bedrocan

By Harry Resin Generally when you think of Amsterdam, you think of the coffee shops, but that’s not all that’s...

How Does Wattage Affect Your Vape? Beginners Guide to Wattage

Many vape devices available on the market allow you to adjust the wattage so that it suits your personal preferences....

9 Healthy Ways of Coping With PTSD

PTSD can affect many individuals and isn’t something that only happens to folks who have served in the army and...

Secrets To A Good Night’s Sleep

After a night spent turning and tossing, you will wake up feeling tired, grumpy, and sleepy. As we get older,...

4 Things To Keep In Mind Before Starting Your Cannabis Journey

Cannabis has recently become legal for medical usage in multiple parts across the U.S and several other countries for recreational...