The Botanical Diary
E
Ornamental

Eastern Arborvitae

Thuja occidentalis

Lives up to 800 years in the wild

Regions
all regions
Colour
Eastern Arborvitae
🌸
Bloom
☀️
Light
Full sun / напівтінь
💧
Watering
Moderate
📏
Height
3–15 m
❄️
Hardiness
Zone 3а

Eastern Arborvitae is one of the most popular conifers in horticulture, and quite deservedly so. Originating from north-eastern North America, it arrived in European gardens over three centuries ago, where it immediately won the hearts of gardeners with its hardiness and charming appearance. Today, Eastern Arborvitae is a true classic, seen on every continent, from small urban gardens to magnificent estates.

The extraordinary diversity of forms and colours is what makes this plant indispensable in landscaping. There are dwarf varieties just 30–50 cm tall and tall-growing cultivars reaching 15 metres, columnar and broad-rounded forms, with bright green and golden foliage. 'Emerald', 'Smaragd', 'Yellow Ribbon' — each variety has its own character. Dense evergreen foliage provides lush greenery even in the coldest months of the year. When light falls at a certain angle, the scale-like leaves shimmer with golden gleams — pure magic!

In the garden, Eastern Arborvitae is a universal helper. It forms excellent hedges, creates a backdrop for vibrant flowerbeds, looks formal in structured compositions and romantic in natural-style gardens. It pairs beautifully with junipers, box, spiraea and other trees and shrubs. This plant tolerates urban pollution and is moderately resistant to diseases and pests, making it suitable for conditions where other conifers hesitate.

And here is the most enchanting fact: in the wild, these trees manage to live up to 800 years! Imagine — a tree that has witnessed more than eight centuries of change in the world. This fact transforms every planted sapling into a symbol of continuity and a gift to future generations. No wonder gardeners are so deeply fond of this plant — it promises to be a faithful companion for generations to come.

Location & soil

Eastern Arborvitae — planting & location

LightFull sun / напівтінь
Soil typeany, рН 6–7,5
Planting timeApril або October
Plant spacing1–2 (жива огорожа)
Planting depthAt root collar level

Evergreen, coniferous, suitable for hedging

Water needs

How to water Eastern Arborvitae

IntensityModerate
FrequencyРаз на тиждень (1-й рік)
Volume10
MethodAt the base

Water regularly during the first year

Annual care

Fertilizing and pruning: Eastern Arborvitae

Spring fertilizingNitrogen (April)
Summer fertilizingNo feeding required
Autumn fertilizingPotassium (August)
Pruning timeApril, August (стрижка)
Pruning typeShaping

Remove no more than 1/3 of new growth at a time

Cold hardiness

Eastern Arborvitae — winter hardiness & care

Hardiness zoneZone 3а
Winter coverHorticultural fleece (young plants)
Cover timingNovember
Plant protection

Diseases and pests of Eastern Arborvitae

Diseases
Коричнева пліснява хвої
Pests
Несправжній щитовий кліщ
Garden design

What grows well with Eastern Arborvitae?

Juniper, Boxwood, Spirea