Lovely Fencing/Hedge Plants That Deter Trespassers

Plants and trees have been used for ages as security hedges to stop trespassers on their tracks.

Cactus for hedge security or fencing

Cactus Plant.

Good fences make good neighbors, or so Robert Frost said, but it also depends on what types of trees you have for your defensive landscaping. Plants and trees have been used for ages as security hedges to stop trespassers on their tracks.

You do not want predatory animals, deer, or burglars to find an easy way into your property, so the solution is always a dependable fence.

Related: The Benefits of Improving your Home with Solar Energy and Where to Begin

Which spiky, thorny, or dense trees make dependable living fences that can deter trespassers from your homestead? Which are the fast-growing shrubs with thorns? Which beautiful garden plants or ornamental shrubs can you use for security?

If strategically placed, security hedge plants are as effective as a barbed-wire fence, or even better, for home security. You do not need expensive fencing if you only get the right trees or plants for your fence.

Even if you go for expensive ones like an electric fence, you still need to back it up with a living fence that only good spiky foliage can provide. There are localities where you need something close to a bulletproof home to survive and protect your valuable items.

Suffice it to say that an effective security hedge is not just for keeping the potential intruders out but also to contain your livestock and pets within your homestead.

Why You Need a Good Fence around Your Homestead

Here is why you need a good fence around your homestead:

There are burglars and wild animals, then there are the attackers who are ready for a confrontation — the kind of fence you have always make these intruders think twice before coming to a decision.

Suppose a burglar or daredevil robbers come to your neighborhood. They see your neighbor’s home, which is well-fenced with barbed wire and thorny shrubs or thickets.  Then they see your home, which is fenced with barbed wire alone, with penetrable gaps here and there.

Put yourself in the shoes of the burglar or the gun-wielding robbers who not only want to steal but also to avoid risks if possible and to escape as fast as is practical. Which home would you launch your criminal act?

When you work on your defensive landscaping, think like the enemy.

1.    Century Plant

Century plant for fencing or hedge

Century plant

A century plant is so beautiful, but it can also turn ugly by its massive spikes if you are an intruder trying to gain a forceful entry through the security hedge. The plant is easy to grow, care for, and tolerates dry and hot conditions. It is also resistant to many diseases.

Century plant has a short lifespan, surviving for up to 20 years, but it is an effective security hedge plant when it lasts along your home fence.

2.    Porcupine TomatoSolanum

Porcupine Tomato Plant. Devil's Thorn Plant for hedge or fence.

Porcupine Tomato

Porcupine Tomato is also called Devil’s Thorn, and only a daredevil trespasser would risk its tough, massive spikes to access your home. Porcupine Tomato makes a reliable security hedge plant also because of its deadly sap that irritates the skin and the fact that it grows to five feet.

3.    Rose

Rose Plant for hedge or fencing to stop trespassing

Rose Plant

The rose has thorny branches that wouldn’t allow a trespasser to gain entry so easily therefore the rose is one of the best security hedge plants. The rose plant is also one of the most beautiful plants, and its presence in your home is a wonderful value addition.

The pretty rose flowers are popular the world over and are a symbol of love.

4.    Barrel Cactus

Barrel Cactus for hedge or fencing

Barrel Cactus

Barrel Cactus is another plant you can consider for your security hedge because of its sharp spikes that surround its barrel-shaped trunk. It is also beautiful and can tolerate harsh conditions; it thrives in arid areas and needs more sunlight than water.

It is also known as Mother-In-Law’s Seat.

5.    Bougainvillea

Bougainvillea is a plant that comes in many different beautiful colors and endures tropical climates, blooming almost year-round. I know at least five species of bougainvillea, although I hear there over 18 species.

Bougainvillea Plant for Hedge or Home Fencing

Bougainvillea Plant

The tough flowers range from yellow, pink, orange, red, or white. My favorite bougainvillea flower is the intense red variety. I have noticed that even the red varieties come in many versions, perhaps due to cross-pollination and soil type. It is common in my neighborhood.

Bougainvillea for hedge or fencing

Bougainvillea Plant

It is common in Asia and Africa in the tropical regions but is actually a native of South America.

Bougainvillea grows as a shrub, with spiky branches that leave no room to pass through. I know of this home in the neighborhood, which is fenced purely with bougainvillea, but you can never pass through the fence. It is a thick, impenetrable security hedge, thanks to the tangling bougainvillea barrier.

Bougainvillea is also a climber plant; I visited a park where it climbed up on tall trees, spreading its beautiful colors over the trees that it covered. It was a lovely scene.

Once a bougainvillea has established itself, I don’t think it needs any special care. You can prune it to check its spread. Its thorny, thick branches can grow as long as 40 feet if you do not intervene.

You should consider bougainvillea if you want fast-growing shrubs with thorns for your home fence.

6.     BlackthornPrunus spinsoa

Blackthorn for hedge or fencing


Blackthorn is a deciduous plant that suits your home as a security hedge plant due to its dense branches filled with 2 inches long thorns that strategically stick out at right angles, ready for the intruder.

Blackthorn grows in dense thickets, reaching 10 feet tall, so it will create a formidable defense around your fence. It would be best if you always pruned it to make it neat. The more you prune it, the more it gets dense.

It blossoms towards the spring, showing off white flowers. Blackthorn grows fast in any soil, though it never does well in very dry areas, for it needs moisture to thrive well.

7.    Berberis darwinii

Darwin’s Barberry for hedge or home fence fencing

Darwin’s Barberry

Also known as Darwin’s Barberry, Berberis darwinii makes a beautiful security hedge plant because it is evergreen, with red stems that hold orange to yellow flowers in the spring.

The leaves are dark green with pricks that can considerably slow down a trespasser’s advance.

8.    Sea Buckthorn

Sea Buckthorn for hedge or fence fencing

Sea Buckthorn

Sea Buckthorn is a deciduous security hedge plant that is common in the coastal regions but can do well even in the inland areas that are less cold.

Wrap Up

When choosing the right plants to deter trespassers from crossing your hedge or fence, go for thorny trees with dense foliage that will slow the intruder. The plant for security hedges should also be too tall unless you want it to act as a privacy screen as well.


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  1. Pingback: Privacy Screen Plants and Trees to Seal your Home from Nosy, Paparazzi Neighbors - The Homely

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