Beginner scenario
Rescue service for expensive houseplants.
Customer
Apartment dwellers with expensive plants they are attached to.
Problem
Plants keep declining and dying despite genuine effort and a lot of googling.
What they want instead
Healthy plants they stop worrying about.
Reference alternative
Google it and experiment — Free advice, contradictory forums, weeks of trial and error, plants still dying.
Buyer sophistication
Low. They cannot judge horticultural expertise.
Urgency
Moderate — plants are visibly declining now.
Your constraints
Pick a challenge