Horticultural Homonyms

Just a bit of fun.

I have two pear trees
They are beautiful tress that grow in my garden
And every year they give the most gorgeous fruit
Has to be tasted to be believed.
I have two pear trees.

I have to pare trees.
All my trees get nasty growths on their bark
Which I remove with a special, silver paring knife
Given to me by my grandmother.
I have to pare trees

I have to pair trees.
If I am walking in the park and I see a tree
I can’t rest until I have found another just like it.
It’s tree-twin.
I have to pair trees

I have two pear trees…
But then, you already know that.

I'm not at all sure about the last line. Suggestions?