Dear Aunty David,
Os is being a smart aleck again! Lookit!
Tulips are not renowned for their intelligence. Try agapanthus instead.
He's making me feel bad about my bad word choices. 

 My self-esteem is in ruins.
Also, he's trying to take over your job by telling me garden-y stuff:
Jasmine isn't a tree. It's a vine, and it grows quite quickly in the right climate.
Which, admittedly, I had not known. What's that tree that looks like jasmine, and the white flowers fall off and it's soo pretty and smells nice too I think?
And also, when I say "grows quickly", I mean, like, within 3 months....