How to Naturally Get Rid of Excessive Trees Without Spending a Dime

The Hidden Crisis in Your Fields

Fellow farmers, take a moment to look at your farmland. Do you see large, towering trees scattered across your fields? While these giants may provide shade on a hot day, they are silently stealing from you. Research from agricultural studies across Africa and beyond shows that trees generally have a significant negative effect on crop yields . In one study, maize yields under tree canopies were as low as 1,683 kg per hectare, compared to over 4,000 kg per hectare in open fields .

The problem is simple: trees compete with your crops for sunlight, water, and nutrients. The competition zone can spread up to 1.5 to 2 times the tree height, meaning a single large tree can affect your crops across a wide area . Studies have confirmed that crop yields are significantly reduced near tree rows, with the most severe competition happening closest to the trees . Even crops like cowpea, millet, and sorghum show significantly lower yields under tree crowns .

But here is the good news: there is a completely free, natural solution that requires no expensive machinery, no chemical herbicides, and no hired labor.

The Under-Burning Method: Nature's Solution at Zero Cost

Under-burning—also known as prescribed understory burning—is a time-tested method used by forest managers and farmers to control unwanted vegetation. The principle is simple: you apply a carefully controlled, low-intensity fire to the base of the trees to eliminate undergrowth and gradually kill or weaken unwanted trees, opening up your farmland for your crops.

This method works because it targets the tree's most vulnerable parts: the cambium layer just beneath the bark and the shallow roots that compete directly with your crops for water and nutrients. Unlike clear-cutting, under-burning requires no heavy equipment. Unlike chemical herbicides, it costs nothing and leaves no toxic residues in your soil.

Step-by-Step Guide to Under-Burning on Your Farm

Step 1: Preparation and Assessment

Before you start, you must prepare your field properly. This is the most critical step for success and safety.

Walk through your farm and identify:

Which trees must go—focus on those directly competing with your crops
The direction of the wind on a typical day
Natural firebreaks like pathways, wet areas, or bare ground
The nearest water source for safety

Clear the area around each target tree:
Remove all dry grass, fallen branches, and dead leaves within a 3-meter radius around the tree base. This creates a "firebreak" that prevents the fire from spreading uncontrollably . In professional under-burning, preburn clearing of understory vegetation is essential for success because it eliminates fuel ladder continuity and creates a uniform fuel bed close to the ground .

The best time for under-burning is:

End of dry season, when the ground is still slightly moist
Early morning or late evening when temperatures are cooler
A calm day with no strong winds
After a light rain that has moistened the topsoil

Step 2: Building Your Fire Bundle

This is where you gather the materials that will create your controlled burn—all completely free.

Collect:

Dry grass and small twigs for tinder—this ignites quickly
Medium-sized branches for kindling—this sustains the fire
Green or damp leaves and grass—this creates the smoke that will affect the tree

The key is to create a smoldering fire, not a blazing inferno. Professional under-burning prescriptions aim for flame lengths not exceeding 1.5 meters to ensure controlled burning and prevent damage to desirable trees .

Step 3: Creating the Fire Ring

Build a ring of dry materials around the tree base:

Place dry grass and twigs in a 1-meter circle around the trunk
Ensure the ring is about 15-20 cm wide
Keep the material close to the ground, not piled high against the bark

The fire should be low and slow. Professional under-burning studies show that successful burns aim to consume fine fuels (up to 1 cm diameter) at rates of 60-70%, while only partially consuming larger fuels . This means your fire should be hot enough to affect the tree but not so hot that it becomes uncontrollable.

Step 4: Ignition Technique

Light the fire ring at multiple points simultaneously:

Start at the downwind side and work your way around
Allow the fire to burn steadily, not in sudden bursts
Never leave the fire unattended—even for a moment

As the fire burns, it will:

Heat the bark and kill the cambium layer beneath
Produce smoke that penetrates the bark pores
Generate heat that damages shallow roots near the surface

In professional practice, under-burning is conducted when fine fuel moisture content is low enough to ensure sustained fire spread, but duff moisture is high enough (60-75%) to prevent total consumption of the protective soil layer . This balance protects your soil while effectively treating the tree.

Step 5: Control and Maintenance

During the burn, you must stay vigilant:

Keep a bucket of water or wet sand nearby
Have a stick or hoe ready to control fire spread
If the fire starts spreading beyond the ring, beat it out immediately
Watch for burning embers that might fly to dry grass

Let the fire burn until it naturally dies down, then rake the ashes around the tree base. Do not disturb the burned area for at least 24 hours to allow the heat to penetrate deeply.

Step 6: The Follow-Up

One week after the burn:

Check the tree base for signs of damage
Look for scorched, cracked, or peeling bark
If the tree shows minimal damage, repeat the under-burning process

Two to three weeks after:

If the tree is dying, you will notice yellowing leaves and wilting
The tree will gradually weaken over several months

After the tree has died:

The dry tree can be cut for firewood or left to decompose
The roots will slowly rot, returning nutrients to your soil

Safety First: Critical Warnings

Under-burning is effective but requires extreme caution. Please follow these safety rules without exception:

Never burn during the dry season when conditions are very dry and windy
Never burn near thatched houses, sheds, or stored produce
Always have water or sand ready to extinguish the fire
Never burn if you feel unwell or have respiratory issues
Warn your neighbors before you start burning
Do not burn under large dead branches that could fall on you
Children and animals must be kept far from the burning area

When Under-Burning Is Not Recommended

This method works best for:

Trees that are already stressed or diseased
Trees with thin bark
Young to medium-sized trees
Trees growing in areas with access to water for safety

Do NOT use under-burning for:

Valuable timber trees you want to keep
Trees in extremely dry conditions where fire could spread
Very large, healthy trees with thick bark—they will survive
Trees with hollow trunks or dry cavities that could catch fire internally

Alternative Free Methods for Stubborn Trees

If under-burning does not work for certain trees on your farm, try these completely free alternatives:

The Mulching Method: Instead of burning, cut down smaller trees and lay the branches and leaves around the base of larger trees as mulch. This slowly smothers competing vegetation while adding nutrients to your soil .

The Ring-Barking Method: Remove a ring of bark all the way around the tree trunk—about 30 cm wide. This cuts the tree's food transport system and will kill it over time. This is completely free and requires only a machete or axe.

Why This Matters for Your Farm

Research shows that trees on farmland reduce yields significantly due to competition for resources . The shade from trees reduces photosynthesis in your crops, and tree roots steal water and nutrients from your plants' root zone. Studies confirm that fast-growing trees are particularly competitive, often consuming more water and nutrients than slower-growing species .

By systematically removing excessive trees using the under-burning method, you can:

Increase crop yields by up to 50-100% in affected areas
Improve sunlight penetration for your crops
Reduce competition for water, especially during dry periods
Return nutrients to your soil through ash and decomposing roots
Create more space for crop rotation and planting

Call to Action: Start Today

Fellow farmers, the solution is in your hands. You do not need expensive chemicals, heavy machinery, or hired labor. The under-burning method is free, natural, and effective. It has been used successfully by farmers and forest managers worldwide to control unwanted trees without spending a single coin.

Here is your action plan:

This week: Walk your farm and identify the excessive trees causing the most harm to your crops
Mark them: Use a simple marker or remember which trees you will target
Wait for the right conditions: A calm, cool day after light rain, preferably at the end of the dry season
Prepare your materials: Gather dry grass, twigs, and green leaves
Burn carefully: Follow the steps in this guide
Monitor and repeat: Check the trees after one week and repeat if necessary

Remember: Your farm's productivity is your livelihood. Every tree that competes with your crops is reducing your harvest, your income, and your family's food security. The under-burning method puts you back in control—for free.

Take action today. Your soil, your crops, and your harvest will thank you.

Disclaimer: This article is for educational purposes. Always consult local agricultural extension officers, fire safety authorities, and your neighbors before conducting any burning activity. Fire can be dangerous and destructive. Practice extreme caution and use common sense at all times.