Manchurian Walnut vs American Sycamore

American Sycamore is the largest tree native to eastern North America. Generally too large and messy to be a street tree, American Sycamore thrives in large, open spaces, such as an acreage or farm.

The bark is one of the main features that draw people to this tree. The outer bark flakes off in irregular pieces to reveal an attractive white, green, and cream colored inner layer, providing winter interest.

American Sycamore has an extremely fast growth rate, gaining up to 6 ft in one year, and will easily reach its mature height in a short period of time. Be wary of this trees' root system, as it's typically very extensive and needs lots of room to expand.

Manchurian Walnut is a large, broad and often multi-stemmed tree with ornamental qualities. This tree produces large, thick-shelled nuts that ripen in the fall. These edible walnuts are reportedly difficult to crack open. They are useful for attracting wildlife, especially squirrels.

The Manchurian Walnut contains and exudes much lesser quantities of allelopathic compounds, such as juglone (common to walnuts), that may prevent or impair growth of nearby plants. Therefore, it is commonly embraced as a safe walnut to plant.

There are reports of rare this species surviving winters to -45C with specimens growing and thriving in Alaska and Edmonton.

There is no regular supply of this species. It is rare and not produced each year.

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