How does gardening reduce anxiety, what eco-therapy studies reveal about stress reduction, and how does this compare with indoor hobbies?

November 21, 2025

How does gardening reduce anxiety, what eco-therapy studies reveal about stress reduction, and how does this compare with indoor hobbies?

🌿 The Soil is My Therapist: A Traveler’s Guide to Anxiety and the Garden

🌏 Sawasdee Krup: From the Keyboard to the Earth

Sawasdee krup, friends. It is Mr. Hotsia (Pracob Panmanee) here.

If you have followed my journey on hotsia.com or watched my videos over the last 30 years, you know I have lived two very different lives. In one life, I am a digital marketer, achieving ClickBank Platinum status by staring at screens, analyzing data, and optimizing conversion rates. In the other life, I am a traveler riding my motorcycle through the dusty roads of Laos, Vietnam, and Myanmar, sleeping in bamboo huts and eating fresh greens from the village gardens.

In my old job as a civil servant in computer science, I dealt with “bugs” in the code. Today, at my Hotsia Home Stay in Chiang Khong, I deal with bugs in the soil. And let me tell you, the bugs in the soil are much better for your anxiety.

Many of my followers write to me, feeling burned out by the “always-on” digital world. They ask, “Mr. Hotsia, how do you stay calm when the internet is so loud?” My answer is simple: I put my hands in the dirt. Today, I want to review Gardening as Anxiety Therapy. Does it really lower stress hormones? What does the science say about “Eco-therapy”? And is it better than just reading a book or playing a game? Let’s explore this with the spirit of a traveler and the precision of a researcher.

🦠 The Mechanism: Why Dirt is “Nature’s Prozac”

You might think gardening calms you down just because it is quiet. But there is actually a biological chemical reaction happening between your hands and the earth.

1. The “Antidepressant” Bacteria (M. vaccae)

In the villages of Isan, people are always touching the soil. Science has found a specific bacteria in healthy soil called Mycobacterium vaccae.

  • The Serotonin Boost: When you inhale this bacteria or it enters through small cuts on your hands, it stimulates the production of serotonin in the brain—the same chemical that antidepressants try to boost.

  • The Mouse Maze: In studies, mice fed this bacteria learned mazes twice as fast and showed significantly less anxiety than the control group. It literally makes your brain sharper and calmer.

2. The “Soft Fascination” (Resting the Brain)

In the city, our brains are in “Directed Attention” mode—focusing on traffic, emails, and phones. This drains us. Gardening uses “Soft Fascination”—where your attention is held by the texture of a leaf or the color of a flower without effort. This allows the brain’s “executive center” to rest and recover, a concept known as Attention Restoration Theory (ART).

📉 The Statistics: What Eco-Therapy Studies Reveal

You might ask, “Mr. Hotsia, is this just a feeling, or are there numbers?” The data on Horticultural Therapy is robust.

The Cortisol Drop

A famous study in the Netherlands took people who had just finished a stressful task and split them into two groups: one read a book, the other gardened.

  • The Result: The gardening group saw a significantly steeper drop in Cortisol (the stress hormone) than the reading group.

  • The Mood: Positive mood was fully restored in the gardening group, while it actually got worse in the reading group.

Who Benefits Most?

A systematic review of horticultural therapy found interesting demographic splits:

  • Men vs. Women: Surprisingly, men showed a much greater reduction in physiological stress markers (SMD = -2.92) compared to women (SMD = -0.21). Maybe because we men are often less verbal about our stress?

  • Age: The therapy was most effective for people over 60, followed by youth under 18. It seems to help the most at the beginning and the “harvest” seasons of life.

⚔️ The Showdown: Gardening vs. Indoor Hobbies

At Kaprao Sajai, my restaurant, I see customers on their phones while waiting for food. They think they are relaxing. But are they?

Gardening vs. Reading

As mentioned in the Dutch study, reading is a “sedentary” cognitive task. It keeps the brain processing words. Gardening acts as a “circuit breaker.” It moves the body and quiets the internal monologue.

Gardening vs. Gaming/Screens

Screen activities often induce “Technostress.” Gardening is the antidote. It provides “Grounding”—literally connecting you to the earth’s electrical charge, which some theories suggest reduces inflammation.

Here is my “Traveler’s Comparison” table:

📊 Table 1: Stress Reduction – The Garden vs. The Living Room

Activity Mechanism of Relief Cortisol Reduction Mr. Hotsia’s Verdict
Gardening Active + Biological: M. vaccae bacteria + Physical movement + Sunlight. High: Significantly superior to reading in controlled trials. The only hobby that physically changes your brain chemistry via soil bacteria.
Reading Passive Cognitive: Escapism into a story. Moderate: Lowers cortisol, but mood may not fully recover if the mind is tired. Good for the mind, but doesn’t “discharge” the body’s stress energy.
Gaming / TV Dopamine Loop: Distraction and reward. Variable: Can sometimes increase stress (cortisol) depending on the game intensity. It numbs the anxiety temporarily but doesn’t fix the root cause.
Walking in Nature Visual/Aerobic: Biophilia and movement. High: Similar benefits to gardening, but lacks the tactile “creation” aspect. Great, but gardening adds the satisfaction of “Mastery” (growing food).

🌿 A Traveler’s Conclusion: Start with One Chili Plant

When I look out at the Mekong River from my homestay, I see that nature is never in a hurry, yet everything gets accomplished.

Anxiety tells you that you must hurry. Gardening teaches you that you must wait.

  • The Science: It lowers cortisol faster than reading and boosts serotonin via soil bacteria.

  • The Experience: It gives you control. You cannot control the world or the stock market, but you can control whether this basil plant gets water today.

My advice? You don’t need a farm. Buy one pot. Plant one chili pepper or some Holy Basil (Kaprao). Put your hands in the dirt for 30 minutes a week. It is the cheapest therapy session you will ever buy, and at the end, you get to eat the results.

Travel safe, plant seeds, and let your mind bloom.

Sincerely,

Mr. Hotsia (Pracob Panmanee)

❓ Frequently Asked Questions (FAQ)

Q1: Do I need a big backyard to get these benefits?

A: No! “Container gardening” on a balcony or even indoor plants works too. The key is the interaction. Touching the soil and caring for the plant is what triggers the “Nurturing” reward pathway in your brain. Even a small pot of mint helps.

Q2: Does wearing gloves stop the “good bacteria” benefit?

A: Ideally, bare hands are best for exposure to Mycobacterium vaccae, as it can enter through the skin. However, you also inhale it while digging. If you are worried about cuts or chemicals, gloves are fine—you will still get the visual and physical benefits.

Q3: How long do I need to garden to lower my stress?

A: The famous Van Den Berg study showed significant cortisol drops after just 30 minutes. You don’t need to spend all day. A short session after work is enough to “reset” your hormones.

Q4: Is gardening better than meditation?

A: For some people, yes. Gardening is “Active Meditation.” If you are someone who finds it hard to sit still and close your eyes (like me!), gardening gives your body something to do while your mind quiets down. It induces a similar “Flow State”.

Q5: What should I plant if I have high anxiety?

A: Plant something fast-growing and aromatic.

  • Radishes or Morning Glory: They grow fast, giving you a quick sense of “Success” (dopamine).

  • Lavender or Jasmine: The scent itself is chemically proven to reduce anxiety.

  • Holy Basil (Kaprao): Because then you can make my favorite dish, Pad Kaprao, which makes everyone happy!

Mr.Hotsia

I’m Mr.Hotsia, sharing 30 years of travel experiences with readers worldwide. This review is based on my personal journey and what I’ve learned along the way. Learn more