The other types of sprayers are garden pump sprayers. These come with different capacities and a shoulder strap so you can carry them around easily while attending to your plants.
Don’t spray when you expect bad weather. Rain can make your foliar spray a waste of time by washing away or diluting your spray solution. The same goes for strong winds. When you spray outdoors, wait for rain and stormy weather to pass. When you spray indoors, it can be a good idea to turn off ventilation fans for an hour or two. This allows the solution to be absorbed by the plants without any major disturbances.
A foliar spray provides a fast and effective way to address nutrient deficiencies. It is also the most common way to apply insecticides and fungicides. Learn more about foliar feeding and how to use it to your advantage.
Take note of the recommended nutrient strengths of your solution. Most of the time, foliar feeding requires a much lower nutrient strength than feeding your plants through soil. If the product that you are spraying doesn’t specify the proper amount for foliar application, start with half the recommended dose.
In addition to speed, foliar feeding has also other positive effects. When the plant is taking in nutrients via its foliage, this causes it to give off more carbohydrates into their root zone. This is beneficial for the microorganisms in the growing substrate that help assist with nutrient uptake.
There are two main types of sprayers available that you can use for foliar sprays; both types are useful depending on the circumstances.
Not all growers may be familiar with it, but most will at some point encounter a scenario where they should apply a foliar spray to their cannabis plants. The reasons for this are various; from treating your plants with insecticides or fungicides, to addressing a nutrient deficiency in the fastest way possible.
When you spray, spray the entire plant – in particular the undersides of the leaves. There are at least two good reasons for this. Many pests, such as spider mites and other aphids are often located on the leaf undersides. This is also where more of the stomata are located.
Always follow the safety instructions. Some commercial sprays may be safer to use than others, but you should always follow the guidelines for safe use. You obviously don’t want to spray potentially harmful substances without adequate protection such as gloves, a face mask, and protective eye gear. Make particular note of how safe the product is to spray on something that you will consume after harvest. Some commercial insecticides or fungicides may work great for ornamental plants, but they can be harmful if not outright toxic for vegetables and of course, for your precious weed! So always read and follow the instructions carefully before you spray.
Learn about how and why to foliar feed your cannabis plants. What makes foliar spraying so effective and how do you get started?
Some nutrients give advice for how much to dilute their solution; others do not, so it is recommended you start low and work your way up. If your plants are young, use 20% of the recommended strength for liquid feeding per gallon. As the plants grow larger, you can increase the percentage while observing how your plants respond.
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To use foliar feeding correctly, you’ll first need to understand a few foundational tips and tricks.
How to Foliar Spray Cannabis
Do you have any foliar feeding advice to share with other growers? Drop your tips, questions, or favorite products in the comments section below.
A little goes a long way when it comes to foliar feeding, but precision is important. When you foliar feed your plants, you want to cover all the leaves. Do this by making a routine where you go from left to right or top to bottom. Plants do not need to be soaking to receive the nutrients.
Stomata are not always open, which limits the time frame in which you can apply your nutrients. Most gardeners advise that you spray in the evening time. If growing indoors, the stomata will take about 15-20 minutes to close up after the lights turn off, which gives you time to apply the nutrients without stressing the plants. Outdoors, you can start spraying in the late afternoon when the sun is descending and not directly hitting the plants.
Stomata are the pores found on the epidermis (skin) of the leaves. Generally, the stomata are responsible for the gas exchange between carbon dioxide and oxygen, but when they’re open, they can also take in nutrients.
When to Use Foliar Spray
Foliar feeding is a process that can help plants absorb nutrients quickly. Learn all about how to foliar feed your cannabis plants to help them grow healthier.