Foliar Feeding

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Weedguru Higher
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Foliar Feeding

Post by Weedguru Higher »

Foliar Feeding


It is a means of feeding plants by spraying the foliage (leaves) with a solution of water mixed with fertilizer. You can leaf feed marijuana plants when they are in vegetative and early flowering stages.

It is not recommended for late flowering, or you will be eating the sprayed-on material later. Stop foliar feeding 2-3 weeks before harvesting. Wash off the leaves with straight water every week to prevent clogging.

Dissolve the fertilizer in water and spray the mixture directly onto the foliage. The leaves absorb the fertilizer into their veins. Feed daily or every other day and make sure not to overfeed.

Outdoors, the best times of day to foliar feed are between 7-10am and after 5pm in the evening. This is because the stomata on the underside of the leaves are open then. The best temperature is about 72 degrees, at temperatures over 80, they may not be open at all.

So find the cooler part of the day if it's hot, and the warmer part of the day if it's cold out. You may need to spray at 2am if that's the coolest time available. The sprayer used should atomize the solution to a very fine mist.

The sprayer used should atomize the solution to a very fine mist; find your best sprayer and use it for this. Make sure the PH is between 7 and 6.2. Use baking soda to make the solution higher PH, and vinegar to make the solution lower PH.

It's better to spray more often and use less, than to drench the plants infrequently. Use a wetting agent to prevent the water from beading up, and thereby burning the leaves as they act as small prisms.

Perhaps the best foliar feeding includes using seltzer water and plant food at the same time. This way, CO2 and nutrients are feed directly to the leaves in the same spray.

Foliar feeding is recognized in most of the literature as being a good way to get nutrients to the plant later when nutrient lockup problems could start to reduce intake from the roots.

It is important to wash leaves that are harvested before they are dried, if you intend to eat them, since they may have nitrate salts on them.

If you are growing hydroponic plants under artificial light, spray only after the bulbs have been turned off and are cool. A drop of water can cause a hot bulb to crack or explode.

Products used for foliar feeding

You can prepare a tea of worm castings, fish emulsion, bat guano, or most any other plant food right for the job and feed in vegetative and early flowering stages.

B-52 – B-vitamins and Norwegian Sea Kelp extract make this a great source of trace minerals. Also B-52 helps you plants be more tolerant to heat and drought. There are two essential plant hormones, auxins and cytokinins. Auxins encourage apical dominance, telling your plant to shoot straight up from the tallest point. Cytokinins do just the opposite, they signal the plant to stop elongating, and to start bushing, and noding closer together. Norwegian Sea Kelp is rich in cytokinins, so wait until you are satisfied with your plant’s height before you spray this one.


– Advanced Nutrients gift to frustrated cannabis growers everywhere. It is a special blend of super chelated micro-nutrients. If for any reason your plants start to yellow, add 200ppm of Revive to the reservoir, and mix up 100ppm Revive 200ppm Penetrator in a foliar spray. You will see your plants returning to green in less than an hour. This stuff is amazing, and it works before your eyes. (In a pinch, substitute Ca-Mg+, same idea just not as immediately effective)


Humic/Fulvic acid
– These are the decomposing remains of peat bogs, refined from leonardite (WARNING: exposure to bare skin may cause skin and eye irritation, handle with gloves). They contain loosely bonded elemental remains that your plant uses to break down its food. Humic acid helps with the breaking down of trace elements, where as Fulvic helps with the breakdown of sugar. Foliar feeding of these basically chemically induces hunger. These natural acids create a demand for nutrients wherever applied, so when applied in small doses directly to the flower, it tells the plant to send more food to the buds. Foliar application also helps your plants get through nutrient lockout at the roots. These two can be combined when added, but start off light, its way easy to burn your buds.


Dutch Master Penetrator has evolved into Penetrator Gold! This unique delivery agent can deliver everything contained in your foliar spray into the plant via the leaf without harming leaf integrity.
Penetrator Gold first binds with the cuticle layer that surrounds and protects every leaf, then temporarily alters it, to allow full transfer of elements through this protective layer. Penetrator Gold's unique formulation then returns it to normal, upon evaporation, without any damage to this vitally important layer. This cuticle layer is very important to plants as it protects them from losing excessive moisture through the leaves as well as forming a barrier against fungal, bacterial and viral agents. If this layer is permanently damaged or altered the plant must then rebuild this layer while being susceptible to attack from these agents and at risk from localised burning or transpirational shock through excessive moisture loss.Penetrator Gold allows gardeners to spray their foliar solution directly onto plants with the lights on which is a must when considering that this supercharged formula doubles the power of Liquid Light!

WARNING: Do NOT use hydrogen peroxide with Dutch Master products.



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