Who said "True friendship is a plant of slow growth."?

This quote is attributed to Amy Lowell.

True friendship is a plant of slow growth. - Amy Lowell

"True friendship is a plant of slow growth."

Amy Lowell Friendship

Poet Critic American 1874–1925

"Poetry is the clear expression of mixed feelings."

"All books are either dreams or swords."

"The world breaks everyone, and afterward, many are strong at the broken places."

"Beauty is something wonderful and strange that the artist brings into the world."

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."