The most common and most likely answer to this crossword clue is the 8 letter word AMARANTH
A
M
A
R
A
N
T
H
More clues leading to the result AMARANTH
- Plant amazing initially, suffering harm when penetrated by insect
- A mother with diatribe on husband is a bloomer
- Rushed into a math carrying a banned colouring agent
- Herb in India, ageless until the end
- During a yatra one flipped over a plant
- . Headed a study about a plant
- . A month end in Delhi for Herb
- Plant Karanth found in a military hospital after losing both extremities
- Herb's Amarnath transportation
- Herb set off on a marathon, nothing came out of it
Buddy explains!

The straight part
We know that "plant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case plant = amaranth.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 AMARANTH mean?
AMARANTH noun- An imaginary flower that does not wither.
- Any of various herbs of the genus Amaranthus.
- The characteristic purplish-red colour of the flowers or leaves of these plants.
- A red to purple azo dye used as a biological stain, and in some countries in cosmetics and as a food colouring.
- The seed of these plants, used as a cereal.