Shall he also pick up herbal plant regarded as panacea? (7)

I believe the answer is:

allheal

I'm a little stuck... Click here to teach me more about this clue!

'plant regarded as panacea?' is the definition.
(I've seen this before)

'shall he also pick up herbal' is the wordplay.
'ALLHEAL' is hidden in amongst the letters.
However, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for allheal that I've seen before include "Valerian, perhaps" , "Plant regarded as panacea" .)

I've seen this clue in The Hindu.

Want a hint initially instead of a full solution? Install my app