How To Apply Florel Correctly

To properly learn how to apply Florel, consider how much the ratio is for creating a solution before spraying it at specific periods. Growing in a greenhouse should help you get healthy and productive plants, but using a growth regulator that helps with branching and prevent budding can further improve your plants’ quality. After all, it’s common nowadays for gardeners to experience underwhelming branching and growth rates, especially with annuals.

It would be best if you also remembered that you shouldn’t be relying on Florel alone. Proper maintenance and practices are a must to experience great rewards from crops. Adjust the ideal conditions for your plants using a greenhouse and read below how to apply Florel correctly.

How To Apply Florel Correctly

Gardening 101: How To Apply Florel


Mixing the solution

To start, create a solution consisting of Florel and water. Three quarts of Florel in 40 to 100 gallons of water per acre will be your ratio. For a spray solution, you should have 300 to 750 ppm of plant growth regulator.

The concentration of the solution is a crucial aspect of the proper usage of Florel. Seasoned gardeners recommend starting at 500 ppm, and how much more or how less you should go depends on your plants’ reactions. Some plants like fuchsia and impatiens are particularly sensitive to Florel, so spray them with 250 ppm instead.

Another component is water and its pH level. The ideal is 4.0 to 4.5 for adding Florel. This is because the chemical tends to lower the water pH, which can burn and damage plants. 

In some cases, you may also need to add a buffering agent to prevent the pH level from getting too low; otherwise, the effectivity of the solution will reduce. 


Spraying application and intervals

Spraying should start immediately after you prepared the solution. Never hold it overnight, and the longest you can wait is 3 hours. The application itself is straightforward, and you should be aiming to cover all the leaves and stems of your plants.

The solution will have no use in the soil because the roots are not as effective as the leaves and stems are. You want to see the leaves wet for up to 4 hours to guarantee effect. In turn, this will also require you less spraying. 

The brand also recommends to have 10-day intervals when spraying and only harvest after 42 days of last application. Additionally, remember that you can only have six spray applications in a year.


When to use Florel?

It’s advisable to spray Florel when your plants have two to four leaves. However, the plants should also be healthy and not stressed as the chemical will exacerbate this condition. You’ll end up with weak plants and yellow leaves. To ensure healthy plants for Florel application, keep them in a greenhouse and water properly.

When to repeat the application of Florel? This will depend on the reblooming times of your crops. For example, geraniums can have only one application than lantana since the former takes eight weeks to rebloom.

You can also spray Florel during propagation when you are weaning the plants from mist to eliminate the need for pinching and increase branching. However, it would help if you stopped it two weeks before you’re going to collect cuttings. Otherwise, your propagations can halt development, which shows as rooting problems and yellowing of leaves. 


What Is Florel?

You are probably familiar with Florel as a growth regulator. But to further understand its proper usage, you should know more information about this chemical. What does Florel do for plants? 

Florel is a chemical that produces ethylene, which plays a significant role in plant growth and development. What it does for you includes taking off early flower buds and even increasing your plants’ branching. These effects eliminate the need for pinching, and your plants will still grow efficiently and provide you more cuttings. 

You can expect faster branching on your crops when you spray Florel immediately after potting when the plants root out or in propagation for more efficient stock production. Additionally, those that cultivate vegetative annuals will benefit the most with this chemical since it delays flowering and even takes off flowers, so the plant only focuses on growing. You no longer have to do the disbudding yourself, but this will still depend on the type of plants you have.


Other uses of Florel

Besides regulating growth and increasing branching, Florel is also useful for plant breeding and generally throughout the plant’s production stage. Remember that you can use it for stock culture, propagation, the young plant’s development, and when the plant finished growing. 

What’s excellent with this spray is that you expose or deliver ethylene inside the plant tissue in doses that won’t damage. And yet still, Florel application should give you the beneficial effects of ethylene discussed earlier on. 



Everybody wants a productive garden, and using and maintaining a controlled ideal environment should help your plants thrive throughout their life cycle. However, you must also learn how to apply Florel, as knowledge for beneficial chemicals goes a long way. For example, you can be more cost and time-efficient since it helps regulate your plants’ growth and branching.

Additionally, using Florel is easy as long as you follow the recommended solution and intervals. Think of it as benefiting from the chemical ethylene without the risk of potential drawbacks. 


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