The most common and most likely answer to this crossword clue is the 10 letter word HELIOTROPE
H
E
L
I
O
T
R
O
P
E
More clues leading to the result HELIOTROPE
- Poet runs to stop novelist making bloomer
- Serf I engaged to secure plant
- Flowering plant exciting holier poet
- Daughter leaves old pot here I prepared for flower
- Bluish flower that man returned to Labour guy
- In anticipation, poet comes to river plant
- The sort of flower hotelier gets worried about outside work
- Plant producing hop tree oil
- . Overwhelmed by expectation, loitered around in plant
- Promise broken by English poet with red and purple flower
Buddy explains!

The straight part
We know that "Bluish flower" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bluish flower = heliotrope.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HELIOTROPE mean?
HELIOTROPE noun- A plant that turns so that it faces the sun.
- A light purple or violet colour.
- The fragrance of heliotrope flowers.
- A bloodstone (a variety of quartz).
- An instrument, employed in triangulation, that uses a mirror to reflect sunlight toward another, very distant, surveyor.
- Light purple or violet.
- Keeping one’s face turned toward the sun.