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How to Use Preen in Vegetable Garden: A Natural Weed Preventer

You can keep your vegetable garden clean and free from weeds. When you understand how to use preen in vegetable garden, it ensures you don’t waste time and money trying to keep your garden clean from weeds.

Preen is a well-known weed preventer in the garden. If you are looking for a natural means of stopping or preventing weeds from germinating, Preen is all you need.

Its application spreads across various agricultural plants. If you own a garden planted with vegetables, herbs, and fruits, you can save yourself from unnecessary stress as you approach the growing season.

The application of Preen on your planting beds makes sure weeds have no chance of impacting the growing process of plants established in the garden.

Preen is formulated to handle those weeds that are known for their toughness. Due to its natural form, there is nothing to be worried about.

It handles weeds such as clover, crabgrass, and bluegrass without stress. The result of the application is guaranteed to be impressive and efficient.

Also, the application of Preen on your plant is seamless. To start with, all you have to do is sprinkle it around your plant monthly.

This application approach ensures your garden stays free from weeds by preventing them from coming back to the garden.

Preen has no health impact or restrictions. You can stay around the area of application with your kids and pets immediately application is concluded.

To increase grow tent humidity need a better lighting system.

How to Use Preen in Vegetable Garden?

First, the application of Preen on vegetable garden must be uniform. When applied uniformly, the outcome of the application is always remarkable.

To avoid wastage or overuse, make sure you apply about 2.5kg of this herbicide to every 250 sq. ft. For clarity, about 2.5kg or 5 pounds is the recommended dosage rate.

That doesn’t mean you can’t go overboard. According to numerous reports, people who apply up to twice the recommended dosage rate always get improved and better performance when it comes to weed control in the garden.

Interestingly, increasing the dosage rate twice the recommended rate doesn’t affect the vegetables, fruits, and herbs planted in the garden. So, you have nothing to fear when it comes to the health of your plants.

Once applied, mix the herbicide into the soil. For effective mixing, you can make use of a rake.

Once you have lightly mixed this weed preventer into the soil, apply water to the topsoil (1 to 3 inches above the soil) immediately.

In this case, water is the activator. Once you have activated the product, make sure you do not apply water to your plant for about 3 days.

In case of heavy downpour, you may need to repeat the application process.

What is a Weed Preventer?

Weed preventer is a product that is formulated to ensure that a garden stays free from weeds. A weed preventer keeps weeds clear from such a garden.

A weed preventer ensures weed seeds that are in the topsoil are prevented from sprouting.

This enhances the health of the plants in the garden which enables growth and productivity.

What is Preen?

Preen is produced by Lebanon Seaboard Corporation. It is a pre-emergent weed preventer that is formulated to combat germinating weed seeds in the garden.

It is important to know that this product does not affect seedlings planted in the garden in terms of their health, and it does not get rid of existing weeds in the garden.

To get the best result, make sure you apply this product over the soil in a uniform manner. When applied uniformly, it establishes a barrier that stops a lot of weed seeds in the soil from growing.

Why use a Preen weed preventer?

Preen is formulated to combat seeds that are about to sprout.

This Weed preventer stops roots and shoots from developing once it penetrates the roots of weed seedlings that are sprouting.

This effect is positive only in weed seedlings that are sprouting newly.

What is the best time to use Preen?

The application of preen in your garden is easy. You can apply this Natural Vegetable Weed Preventer around established crops anytime in the growing season.

Preen can be applied around sprouting herbs, vegetables, and fruits in the garden. In summary, apply when your vegetables, herbs, and fruits are about two to three inches above the soil surface.

Just as we have discussed earlier, the product doesn’t get rid of existing weeds, so it is expected that you should take out weeds that are already growing for the best result.

When you choose to apply this garden weed preventer very early, you may not need to go through the process of hand weeding throughout the growing season.

For effective results, make sure you reapply this Natural Garden Weed Preventer once in four to six weeks until your crops are ready for harvest.

Is Preen safe for a vegetable garden?

When you carefully study how Preen works (How it combats weed seeds), you may be bothered about its effect on planted vegetable seeds.

Well, this may be a big issue when you place this product on seeds recently planted in the garden, especially small seeds.

In the case of vegetables with large seeds, the application of preen immediately after planting may not affect such plants.

Vegetables with large seeds are not affected because the seeds are always planted very deep below the soil surface.

Also, if you are bringing to the garden transplants, they are not generally affected by the application.

Since the root of the plant has developed and as well planted deeper into the soil, such plants are not affected.

Benefits of using Preen on your Garden

There are many benefits attached to the use of this Garden Weed Preventer in your garden. The secret to its numerous benefits is to ensure the application is done correctly and at the right time.

Weeds, if left uncontrolled can hinder the growth of your plants. They compete with plants in the garden for water, nutrients, and space.

Also, once weeds are left to take over the garden, controlling them is not always an easy task.

So, one of the benefits of Preen when it comes to weed control is to ensure that weeds are prevented from sprouting.

Make sure you handle the application process just as instructed by the manufacturer.

Disadvantages of using Preen

In terms of performance, there are no disadvantages attached to the use of this product for weed control.

In terms of application and usage, if it is applied to areas that are newly planted, it kills both the weed seeds and planted vegetable seeds. When you apply this herbicide the right way, you won’t have anything to worry about.

Another disadvantage of Preen is that it doesn’t get rid of sprouting weeds. So, if applied in a garden with existing weeds, it doesn’t kill such weeds. It is only effective for weed seeds.

To ensure all of these disadvantages are properly managed and turned into advantages, make sure you follow the instructions that are printed on the product. Check the label and use the product as instructed.

DIY Ways to Prevent Weed From Your Garden

In this section, we will be discussing the effective methods of controlling weeds in the garden. To start with, make sure you stay clear of herbicides that are known or considered as toxic. Avoidance of toxic herbicides has many benefits to health and the environment.

The following are the organic way you can adopt to control weeds in your garden;

  1. You can cover the soil in your garden using organic matter

This organic matter when applied can stop the growth of weeds. It as well hinders the growth of weed seeds in the soil.

The process of covering the topsoil with organic matter is called mulching.

Some of the organic matter you can use for mulching include straw, grass clippings, wood chips, and compost.

Do not make use of hay for this process. Hay contains a lot of contaminants that may activate the growth of weeds instead of preventing it.

  1. Make sure planting is done without leaving much space between the plants

When you do not leave unnecessary space in the garden, it becomes very difficult for weed to sprout.

For your vegetable garden, you can adopt the method of planting in a wide row or using the Square-Foot method of planting.

When you make use of any of these methods, once your plants get to maturity, their leaves get in contact with each other, hence, prevents sunlight from penetrating to the bed.

Once sunlight can’t get to the bed, this prevents the weeds from getting the sunlight they need to support their growth.

  1. While digging and tilling the soil in the garden, ensure you do not over-do it

When you till the soil, it lifts weed seed onto the soil surface. To have effective control over weeds, it is always recommended that garden owners adopt the no-till gardening method.

With the adoption of the no-till method, the soil is only disturbed minimally.

Apart from preventing weeds from growing, the no-till method also enhances the fertility of the soil and as well improves the structure of the soil.

  1. Making use of plastic sheet

Another method of controlling weeds yourself is making use of plastic sheet that is considered heavy to cover areas that are affected with weed. Make sure the plastic to be used is clean and clear of contaminants.

This process is called solarisation. This process or method is only considered effective when the weather is warm. Once the affected area is covered with this heavy sheet, it generates heat which burns out the weeds.

Once applied, you must leave the sheet intact until the weeds have changed color to brown and as well dried off. This process takes about 4 to 6 weeks before the effect can be seen.

  1. Do not over-use or over-apply supplements on your plant

Make sure the water and nutrients that you apply to your plants are the exact dosages they need.

When over-used or over-applied, the water and nutrients that are left unutilized by the plant are picked up by the weeds which they later use to support their growth process.

You can make use of irrigation bags and drip irrigation system to control the water and nutrient intake of your plants.

These irrigation methods only channel water and nutrients directly to the root.

  1. You can also make use of hot water for weed control

All you need to do is boil water and apply it over the weeds. Once applied, it burns the weeds. This approach is effective for weeds crawling into the garden or weeds growing in those difficult areas.

  1. You can as well make use of vinegar

When you make use of vinegar, you have to apply it to the weeds as many times as possible until the effect of the application is noticed.

Frequently Asked Questions about Using Preen Weed Preventer

What is the active ingredient in Preen?

Preen Natural Vegetable Garden Weed Preventer is made from one hundred percent Corn Gluten Meal.

How long does it take before reapplication occurs?

When you apply Preen in your garden it takes about 4 to 6 weeks before you consider another application. Also, in case of a heavy downpour, reapplication is expected to take place.

The particles on the soil surface after I applied water to Preen, what are they?

The particles are called corn gluten meal granules. These granules disintegrate into the soil with time. So, no worries.


Preen is an organic weed preventer that is made to combat weeds in the garden. Before usage, make sure you read all associated instructions and follow them accordingly.

You can only achieve the best result when you adopt best use practices. Before application, make sure you get rid of weeds that are already growing in the garden.

And remember, Preen is formulated to combat weed seeds only. Using it on already established weed won’t give you an expected outcome.

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