Yes, the sentence is correct.
Subject: The tree
Verb: was stricken
Prepositional phrase: by disease
"Finding that perfect tree with just the right height and width" is not a complete sentence.
Dutch Elm disease is a tree disease that is spread by beetles. It is caused by a fungus carried by elm bark beetles, which feed on the bark of elm trees, introducing the disease into the tree's vascular system.
one branch of the tree protruded towards the right affecting the traffic on the bridge.
The noun is tree, a word for a thing.
A conifer tree is a cone bearing tree. An example sentence would be: The pine tree is a conifer tree.
METAPHOR on apex just got it right.
The nouns in the sentence are tree and the compound noun backyard.
I'm not sure if this is what you need, but an example of a sentence fragment containing the word tree is below. The bird in the tree. (This is a sentence fragment and not a complete sentence because there is no verb (action word).
The structure of the sentence "tree diagramming" is a noun phrase consisting of the noun "diagramming" modified by the noun "tree."
No, this sentence is in the active voice. In passive voice, it would be "The tree was planted."
Southern magnolia tree is not capitalized unless it is the first word in a sentence.
The green tree was destroyed in the wildfire.