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Friendly Trees

Plant a Tree that is a Supportive Ally

Jan Johnsen's avatar
Jan Johnsen
Feb 02, 2026
∙ Paid

What are some of the most “friendly” trees?

Research has shown that certain trees positively affect human stress levels, mood, heart rate, and brain waves through chemicals they release (phytoncides). Now I also believe the electromagnetic frequencies that trees emit affect us but I will discuss that at another time if you want me to. I will just put it out there.

What trees (in the temperate regions, not tropical) are calming or make us more alert? Here are the top choices people naturally feel drawn to:

Japanese Cedar (Cryptomeria)

Let’s start with the best studied trees. Japanese Cedar (Cryptomeria) and Hinoki Cypress are lauded for their effect on human well being by the Japanese. They are the basis of Shinrin-yoku or the practice known as forest bathing.

I took this photo art the amazing LONGHOUSE RESERVE in East Hampton, NY. Jack Lenor Larsen planted a row of Japanese Cedar along the entry road. What a wonderful way to enhance the atmosphere.

These evergreens release phytoncides like α‐pinene & limonene. These scents are proven to reduce cortisol, lower blood pressure, and improve immunity. They create a calm brainwave state which results in deep relaxation and lowered anxiety.

So what does all that mean? The trees - through their scent - calm us down.

Fragrance is a big part of the garden - and our well being. It works fast because it crosses the blood -brain barrier quickly.

The Japanese have lots of studies to prove that walking amidst these scented evergreens help people relax and heal. It is a proven psychological therapy. These trees are our allies, soothing and comforting us and all we have to do is breathe in deeply.

GARDEN DESIGN TIP:

Plant Cryptomeria japonica ‘Black Dragon’ and breathe in deeply!

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