Marijuana Foliar Feeding Tips
9 Tips to get the most out of your spray
Hi there and welcome (back) to Free the Tree!
In today’s article we’re going to go over a couple foliar feeding tips 🙂
It’s important to note from the get-go the foliar feeding should only be used as a quick fix, never spray more than once every 10 days as it may confuse the plant and reduce nutrient intake via the root system.
Cannabis Foliar Feeding – How to Improve Nutrient Intake
1. Spray the bottom of the leaves
Spraying the bottom of the leaves with a fine mist and avoid creating droplets of the leaves. Fine mist is electrically attracted by the foliage, improving penetration.
Even young marijuana plants have little waxy hairs that impair liquid penetration, misting the leaves will reduce their effectiveness.
2. Do not spray your Hot plants or in a Dry atmosphere
Spraying when the plant foliage is hot causes the spray to crystallize on the surface which stops the penetration. Re-spray your plants with plain water about 10 minutes after spraying the nutrient-rich solution in order to improve penetration.
When to spray your plants
You want to spray your plants either when lights go off or just as they’re coming on in order to reduce any chances of leaf shock or burn.
If you must spray in warm conditions spray everything with plain water until the temperatures of the room and foliage drop before spraying your plants with the nutrient-rich solution.
3. Apply Nutrients Carefully
It’s very easy to ever-do it when foliar feeding. Apply mobile nutrients sparingly, as they are absorbed easily and can be moved around the plant.
If you’re experiencing an immobile nutrient deficiency 2 or 3 applications are necessary.
Calcium and Boron are poor candidates for foliar feeding because they translocate poorly; On the other hand, Nitrogen in humid environments penetrates almost instantly!
Keep your solution diluted, leaves can burn easily if the solution is too concentrated or acidic. You should see improvements in less than a week but a second spray could be necessary by the end of the week to ensure the cure.
4. Boron, Calcium and Iron
The 3 nutrients move very slowly during flowering. A supplemental foliar dose often speeds growth when it slows.
A foliar spray of potassium can also help flowering, especially if temperatures dip below 10°C (50°F) or over 25°C (80°F).
5. Spray New Growth
Newer growth are more permeable than older leaves since they haven’t fully formed their defense (waxy layer on marijuana leaves) and there are only few trichomes.
This allows newer growth to intake much more nutrients than older, full grow leaves.
6. Measure the pH!
pH is still important although you’re feeding through the leaves! Keep the pH between 6.7 and 8.5 as nutrients can become toxic out of those ranges.
If the solution is too acidic the leaves may show “burnt” spots.
Potassium Phosphate becomes phytotoxic below a pH of 4 and above 8.5 so be careful.
7. Use a surfactant
Use a surfactant, as instructed on the label, with your spray in order to improve the penetration of the solution. Make sure you use something organic, especially during the flowering stages.
8. Avoid Droplets
If droplets form they will roll of the foliage rendering your feeding ineffective. With the proper amount of surfactant you should be able to avoir this easily.
9. Test the spray before applying
Test your sprayer out on a mirror in order to ensure even spray as well as the amount of droplets that form. This will allow you to see if you need to stop spraying, and how quickly, in order to avoid droplets.
Alright folks that’s it for this one, hope these tips were useful
Until next time, Be safe and grow easy!
Compare Strain Characteristics and Seed Prices with our new tool! 🙂
You have an Indoor Growing issue? Here's everything we've covered so far
Have a question? Get in touch with us!