How Big Can Emerald ‘Smaragd’ Cedars Grow?

June 17th, 2022
How Big Can Emerald ‘Smaragd’ Cedars Grow?

How big Emerald ‘Smaragd’ Cedars will grow depends on several factors. Today, in our blog we will talk about what influences the growth of Emerald Cedars, and how big you can expect them to get. There is never one magic height number that every tree or shrub will adhere to no matter what. Emerald Cedars are living organisms that are heavily influenced by environmental factors just like all other trees and shrubs. 


Emerald Cedars need plenty of water, especially newly planted ones. They are moderately drought resistant, but this is only after they are well established. Your Emerald Cedars will do better and grow bigger if they are watered on a regular schedule during a dry season. 


Spacing will have a big influence on the final size of your shrubs. When shrubs are planted very close together, they have less room for their roots to spread out. However, if they are planted very far apart, then it will take a few years for them to fill in to create a privacy hedge. The closer they are spaced, the quicker you will have privacy. So, how far apart you space them depends on how quickly you want your hedge filled in and how high you want them to get. When used as a hedge, Emerald Cedars are usually planted between 18 to 36 inches apart depending on your needs. 


Emerald (‘Smaragd’) Cedars need nutrients to grow well, just like other plants, shrubs, and trees. If you have good quality soil, then they will get most or all of their nutrients from the ground. However, if you don’t have good quality soil, then giving them appropriate fertilizer is a good idea. The same is true if the cedars are several years old because over time they will be depleting whatever is in their soil. There are tons of fertilizers to choose from including water soluble and slow-release granules. One easy method for fertilizing is to use a dilute liquid fertilizer—like half strength—every time you water, or at least during the spring and summer. 

Potential Size 

To answer the question in the title of this article, Thuja occidentalis ‘Smaragd’ or Emerald Cedars can grow to approximately 15 feet tall and four feet wide, given the right conditions. It is a beautiful shrub that is often used for hedging, but it also would make an excellent specimen plant or a welcome addition anywhere that privacy is needed. Thuja occidentalis ‘Smaragd’ won the Award of Garden Merit from the Royal Horticultural Society because of its beauty, adaptability, and reliability. 

If you have any questions about Thuja occidentalis ‘Smaragd’ cedars or you are interested in planting a hedge this summer, give us a call on the Lower Mainland at (778) 241-5664, as cedar hedging is our business.


Pacific West Cedars, based in Langley, British Columbia, farms, supplies, and installs cedar hedging on the Lower Mainland. They offer two kinds of cedars plus boxwoods: Western Red Cedar (Thuja plicata), and Emerald Cedars (Thuja occidentalis “Smaragd”). They work with landscapers, contractors, and also directly with the public. 

If you have any questions about this article or would like to talk to us about cedars, we encourage you to call us at (778) 241-5664.


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